Application
Dimensional, mechanical and non-destructive verification of incoming, in-process and finished goods.
Quality inspection is a decision process, and the instrument is only one part of it. The acceptance criterion has to exist first, expressed as a tolerance, a standard or a defect size, because that criterion determines the measurement uncertainty the instrument is allowed to contribute. Working forwards from an instrument specification and then writing an acceptance rule around it inverts the whole exercise.
This is also where the gap between resolution and accuracy costs the most. A display with fine resolution conveys confidence that the underlying measurement may not deserve, and in an inspection context that confidence is acted on - a part is passed or rejected on the strength of a number whose precision was never established. The instrument that shows the most digits is not the instrument that makes the better decision.
The measurement also has to fit the moment it is taken in. Incoming inspection can use a bench and a controlled environment, in-process inspection has to be quick enough not to hold the line, and final inspection may have to be a record that accompanies the goods. Those three contexts usually lead to three different instruments for the same dimension.
| Measurement | What the reading has to establish | Instruments commonly specified |
|---|---|---|
| External and internal dimensions | Whether the feature lies inside the tolerance band, which requires the instrument to be better than the band rather than equal to it | Dimensional measurement instruments |
| Hardness and mechanical properties | Whether the material or the process has produced the property the drawing calls for, usually as a comparison against a known condition | Industrial testing equipment |
| Coating thickness and surface finish | Whether a process step has been applied to specification, which is a property of the surface rather than the bulk | Coating thickness gauges and roughness testers |
| Internal and surface defects | Whether a flaw exists, where it is and how large it is compared with the acceptance limit | Non-destructive testing equipment |
| Composition and material verification | That the material supplied is the material specified, which the dimensional checks cannot show | Analytical instruments |
The criterion comes first; the instrument is chosen to support it with an adequate margin.
| Adjacent application | What separates it from product quality inspection |
|---|---|
| Industrial test bench & calibration | A bench checks whether a measuring instrument is honest, while inspection uses instruments assumed honest to judge a manufactured article. |
| Electrical parameter testing | That work judges electrical behaviour against a declared performance figure, whereas inspection judges a physical item against a dimensional or material specification. |
| Water quality monitoring | Composition is measured there in a stream that changes with time, not in an article whose properties are fixed once made. |
| Energy efficiency testing | Consumption over a cycle is a performance quantity, while inspection is a conformance decision against a written criterion. |
| Tank & silo level monitoring | Level reports an inventory figure and is never a pass-fail judgement, which is the defining characteristic of inspection work. |
Published products
Digital Calipers
Digital vernier caliper in 150, 200 and 300 mm ranges with a 0.01 mm display, metric and inch switching, zero at any position, and an IP54 version for wet or dusty work.
Dial Indicators
Mechanical dial indicator and dial gauge for comparative measurement, in 0.01 mm and 0.001 mm graduations with dial diameters from 42 to 80 mm.
Air Quality Monitors
Indoor air quality monitor reading formaldehyde, total volatile organic compounds, benzene, carbon dioxide, PM2.5, PM10 and a combined index with temperature, humidity, WiFi app logging and history curves.
Micrometers
Outside micrometers in two grades: digital styles reading to 0.001 mm, and mechanical styles from 0-25 to 225-250 mm, both with carbide measuring faces and a ratchet stop.
101-0A (13 models) · Laboratory Ovens
Electric drying oven with a chamber from 16 to 1000 litres, a working range from 5 degrees above ambient to 250 degrees Celsius, a galvanised or stainless-steel interior, forced air circulation on most models and a timed digital controller.
4XC (13 models) · Laboratory Microscopes
Metallurgical microscope for reflected-light examination of metals and other opaque specimens, in inverted and upright stands with long working distance objectives, a trinocular camera port and optional image analysis software.
7110 (8 models) · Electrical Safety Testers
Compact programmable safety tester with 5 kV AC and 6 kV DC withstand voltage, insulation resistance to 9999 MΩ, five stored programs and PLC remote control.
7305 (3 models) · Electrical Safety Testers
Programmable ground bond tester with a regulated AC test current, settable resistance limits, self-zero lead correction and PLC remote control in three current classes.
7440 (4 models) · Electrical Safety Testers
Bench safety compliance analyser combining AC and DC withstand, insulation resistance and, on the top model, ground bond testing, with stored programs and a matrix scanner interface.
7460 (2 models) · Electrical Safety Testers
Programmable high voltage withstand tester in an alternating and a direct version, with a regulated output, fifty linked program groups, arc detection and remote control.
8205 (2 models) · Insulation Resistance Testers
Bench insulation tester with a 100 to 1000 V direct output, resistance measurement to 9999 MΩ, programmable rise and test times, a PLC remote interface and automatic discharge.
AS803F (5 models) · Light Meters
Digital lux meter covering 0 to 200,000 lx with a sensor head that rotates through 180 degrees, lux and foot-candle units, data hold, maximum and minimum capture and a separate ambient temperature reading.
AWA5636-0 (5 models) · Noise Meters
Class 2 digital sound level meters in five configurations, from a basic instantaneous reading instrument up to an integrating and statistical model with 8000 records of storage.
B0102 (3 models) · Electrical Test Equipment
Bidirectional battery simulator range from 5 V to 60 V, sinking and sourcing current at the same terminals, with microamp current resolution and six stored voltages.
BH-4 (2 models) · Portable Gas Detectors
Hand-held multi-gas and single-gas detectors with audible, visual and vibrating alarms, covering the four-gas confined space combination as standard and a long list of single gases to order.
CH1201 (4 models) · LCR Meters
Bench turns counters for coils up to 80,000 turns, with automatic ranging, no calibration before a measurement, and DC resistance measurement on the two R models.
CH2801 (5 models) · Power Meters
Single-channel bench power meter with a 4.3 inch colour screen, true root mean square measurement, energy totals, and five models reaching 40 A or down to 0.05 mA, one with harmonic analysis.
CH6311A (5 models) · Electrical Test Equipment
Five-model programmable DC load with 150 V or 500 V input, 150 W or 300 W, six load modes and 500 kHz ripple measurement with peak and valley capture.
CH6321A (5 models) · Electrical Test Equipment
Programmable DC electronic load with 150 V and 500 V inputs, 60 to 240 A, 600 to 1500 W, six load modes and battery, dynamic and OCP test functions.
CH8811+ (6 models) · Electrical Test Equipment
Six-model programmable DC load from 600 W to 1200 W, with 120 V or 360 V input, 60 A, six load modes, battery discharge with curve plotting and remote sense.
CH906A (2 models) · Electrical Test Equipment
Linear battery simulator in two ranges, 20 V at 10 A or 10 V at 2 A, with automatic changeover between charge and discharge, microamp readback and a 4.3-inch touchscreen.
CH9720B (4 models) · Electrical Test Equipment
Four-model programmable DC electronic load with a 0 to 360 V input, 150 W or 300 W, five load modes, battery discharge testing and 500 kHz ripple measurement.
CH9721P+ (5 models) · Electrical Test Equipment
Four-model series combining a programmable DC load with fast-charge protocol detection, 500 kHz sampling, ripple measurement and over-current protection testing.
CXT2518-4 (5 models) · Electrical Test Equipment
Bench scanners that step a four-wire measuring circuit through 2 to 64 channels, applying per-channel limits, in ranges from 1 µΩ to 2 MΩ and at up to 40 readings per second.
CXT3513 · Electrical Test Equipment
Benchtop tester measuring the three winding resistances of a three-phase motor from 10 µΩ to 20 kΩ, calculating spread and unbalance for star or delta connection and sorting against limits.
DT9205A (3 models) · Digital Multimeters
Handheld digital multimeter with a 1999-count display and 32 ranges covering AC and DC voltage and current, resistance, capacitance, diodes and transistors, with continuity, overload protection and automatic switch-off.
eTM-152MF (5 models) · Electrical Test Equipment
Bench DC power supply in a narrow 80 mm case, with 15 to 150 V and 2 to 20 A models, four-digit voltage, current and power readout, and preset without shorting the output.
GH880 (2 models) · Surface Roughness Testers
Portable surface roughness tester reading Ra and Rz with up to 26 parameters, eight built-in standard editions and four interchangeable sensors for bores, grooves and curved surfaces.
GQ-KL800-L4 · Fixed Gas Detectors
A point gas detector in an explosion-proof cast aluminium housing for continuous monitoring of combustible gas, oxygen, hydrogen sulphide and carbon monoxide, supplied as a stand-alone unit or with a controller over wired or wireless links.
HB-10N (6 models) · Material Testing Machines
Bench calibrator for torque wrenches from 1 to 5000 N·m, with a lever loading arm, height and length adjustment, peak hold and an RS232 link.
HDP-5 (4 models) · Material Testing Machines
Screw torque tester with a cable-connected detector head, for checking the torque of screws already tightened, with peak hold, averaging and stored readings.
HG-8 (2 models) · Temperature Recorders
Eight or sixteen channel thermocouple scanner with a 5 in touchscreen, a scan interval from one second to a day, live-circuit rating and MODBUS RTU communication.
HG2536 · Electrical Test Equipment
Tester for ceramic gas discharge tubes and surge arrester parts, with 5 to 2000 V output, leakage measurement to 2200 µA and a HANDLER interface for sorting.
HG2600 · Electrical Test Equipment
Benchtop diode tester measuring forward voltage and forward current, reverse voltage to 1200 V and reverse leakage to 2200 µA, with three test speeds and a PLC interface.
HG2611D · LCR Meters
Bench leakage current tester for aluminium electrolytic capacitors, with a 0 to 500 V adjustable charging voltage, three current ranges from 0.01 µA to 30 mA and settable charge and discharge times.
HG2776A (2 models) · LCR Meters
Two bench inductance meters, one covering 100 Hz to 200 kHz in 37 points at 0.05% accuracy and one covering four points to 10 kHz at 0.1%, both with four-terminal connection and multi-parameter display.
HG2788 · Electrical Test Equipment
Benchtop tester for piezoelectric buzzer plates, measuring equivalent resistance Rs and resonant frequency Fs, with seven-bin sorting, three test speeds and a HANDLER interface.
HG2810B (6 models) · LCR Meters
Bench LCR bridges covering fixed-frequency and wide-band models, with 0.10% or 0.05% basic accuracy, five-terminal connections, bin sorting and optional RS232 and HANDLER interfaces for incoming inspection and production sorting.
HG2900 · Electrical Test Equipment
Benchtop tester for soft magnetic cores and core-sorting machines, measuring induced voltage from 1 μV and magnetomotive force to 2.00 A, with fourteen pass bins and five test speeds.
HG3030 · LCR Meters
Three-channel DC resistance tester for motor windings, covering 10 µΩ to 2 MΩ at 0.05% accuracy, with simultaneous three-phase display, percentage comparison and pass or fail sorting.
HG7683 (2 models) · Insulation Resistance Testers
Bench insulation resistance meter with a voltage range from 1 V, resistance to 100 TΩ, three measuring speeds, five-bin sorting and 600 stored records on the wide-range model.
HG7729 (4 models) · LCR Meters
Four transformer testers with 20-channel scanning, LCR and DC resistance measurement at 0.05% basic accuracy, built-in DC bias and test frequencies from 20 Hz to 1 MHz for production testing of wound components.
HG7804 (2 models) · Electrical Safety Testers
High-power safety tester with AC and DC withstand, insulation resistance, open and short detection and arc detection, in a four-channel and an eight-channel version with scanner expansion.
HG7829A (3 models) · LCR Meters
Precision bench LCR bridges covering 20 Hz to 300 kHz, 500 kHz or 1 MHz at 0.05% basic accuracy, with 1 mHz frequency resolution, a 7-inch colour display, 40-point list sweeps and graphical analysis.
HG9813 (4 models) · LCR Meters
Four impulse winding testers reaching up to 10 kV, with corona analysis, high-speed waveform capture, a 7-inch colour display and pass or fail outputs for inter-turn insulation testing of coils and windings.
HIT-10000S (3 models) · Material Testing Machines
Split-type impact torque tester for powered wrenches and hammers, with a separate transducer, TRACK, PEAK and PPEAK modes and three large-capacity sizes on a colour touch display.
HP-10S (5 models) · Material Testing Machines
Bench torque tester for setting the clutch of electric screwdrivers, with five ranges, three units, ten stored readings, peak hold and an RS232 link.
HT-10A (4 models) · Material Testing Machines
Bench closure torque tester with adjustable chucks, upright or inverted clamping, four ranges and peak hold for cap tightening and opening force.
HTB-2020 (2 models) · Electrical Test Equipment
Two-model battery tester measuring voltage to 80 V, over-current to 20 A, internal resistance, identification resistance and capacity, with a built-in DC supply for charge and discharge.
JITAI-510 (4 models) · Ultrasonic Thickness Gauges
Portable ultrasonic thickness gauge covering 0.8 to 600 mm, with through-coating, ultra-thin and electromagnetic variants down to 0.15 mm and 0.001 mm resolution.
JLY-CP100 (2 models) · Gas Leak Detectors
Portable combustible gas leak detector reading 3 to 20 percent of the lower explosive limit with a flexible gooseneck probe, a three-way alarm and a full-colour display.
JPT-01 (6 models) · Laboratory Balances
Mechanical double pan balances in six capacities from 100 g to 5000 g, each supplied with its own weight set and tweezers, reading by lever and rider with no supply, no calibration routine and no data output.
KS8651 (6 models) · Electrical Test Equipment
Bench fast-charge tester with a built-in electronic load, 60 V and 10 A per port, protocol testing to PD3.1, four or eight ports and an 8-inch Android touchscreen.
KS8661 · Electrical Test Equipment
Ten-port bench tester for power banks, adapters and storage supplies, with a built-in electronic load, 20 V and 10 A per port, 200 W and a 10-inch touchscreen.
KUT350 (4 models) · Ultrasonic Testing Equipment
Digital ultrasonic flaw detector with 150 to 800 MHz sampling, DAC and AVG curves, 500 inspection channels and U-disk storage on the upper models, for weld, forging and plate inspection.
KY-CJE220 Series (3 models) · Magnetic Particle Testing Equipment
Portable magnetic particle inspection yoke with AC, DC and inverter power packs, white or ultraviolet illumination, and a 0 to 220 mm magnetising pole spacing, with a bench unit for small parts.
LC-V1200E (9 models) · Spectrophotometers
Benchtop single beam and double beam spectrophotometers in nine models, spanning the visible range on tungsten lamps and the ultraviolet and visible range on tungsten plus xenon, with bandwidths from 5 nm down to 1.8 nm.
LJ12A3 · Proximity Sensors
M12 inductive proximity switches for non-contact metal detection, in shielded 2 mm and unshielded 4 mm versions with NPN, PNP, two-wire DC and two-wire AC outputs.
LK1008S (4 models) · Temperature Recorders
Temperature recorder built from 8 to 64 channels, with 8 GB flash memory that holds data through a power cut, four-level alarms and a choice of a 5 in keyed or 7 in touch panel.
LK149A (5 models) · Electrical Safety Testers
Benchtop high voltage meter for verifying hipot tester output, covering 10 kV and 20 kV AC/DC ranges with 0.001 kV resolution and 0.4% DC accuracy.
LK2670AX (6 models) · Electrical Safety Testers
Adjustable hipot tester series with 0 to 5 kV and 0 to 10 kV outputs, leakage ranges to 500 mA, presettable test time and optional PLC control.
LK2674 (5 models) · Electrical Safety Testers
Ultra-high-voltage hipot tester reaching 15, 20, 30 or 50 kV, with AC or AC/DC output, leakage ranges to 20 mA and a 1 to 99 s preset test time.
LK2675A (5 models) · Electrical Safety Testers
Leakage current tester with 0 to 250 V adjustable output, 300 VA to 2000 VA supplies, true-RMS AC/DC measurement to 1 MHz and a three-phase model.
LK2678BX (4 models) · Electrical Safety Testers
Four-terminal ground bond tester with 1 to 50 A output across four models, 0 to 600 mΩ ranges, presettable test time and upper limit alarm.
LK2679C (6 models) · Insulation Resistance Testers
Programmable insulation resistance tester with 0.5 to 1000 V direct output, resistance to 10 TΩ, leakage current from 10 pA and SCPI control over USB, RS232, RS485 or a handler interface.
LK2680A (4 models) · Electrical Safety Testers
Medical safety test range covering withstand voltage, ground bond resistance and leakage current, with arc detection, true-RMS measurement and 1 MHz response.
LK7110+ (5 models) · Electrical Safety Testers
Menu-driven programmable hipot tester with 5 kV AC and 6 kV DC outputs, insulation resistance to 9999 MΩ, four test modes and standard RS232 and PLC interfaces.
LK7140P (6 models) · Electrical Safety Testers
Programmable hipot and insulation tester with 5 kV AC and 6 kV DC outputs, 50 GΩ insulation range, arc detection and four or eight scanning channels.
LK9661D (3 models) · Electrical Safety Testers
Combined safety compliance tester running withstand, insulation, ground bond, leakage and no-load power tests in one sequence, with 100 programs of eight steps.
LS160 (6 models) · Spectrophotometers
Pocket solar film tester that reports visible transmission, ultraviolet rejection and infrared rejection together when a sample is placed in its slot, at either 940 or 1400 nm.
LS170 (7 models) · Colorimeters
Handheld colorimeter that reads the colour of a surface and reports its difference from a stored standard, with a choice of measurement geometry, a colour library held on the instrument and a tolerance that returns a pass or fail.
LS225 (4 models) · Coating Thickness Gauges
Coating thickness gauge with interchangeable magnetic and eddy current probes, five-point calibration and an accuracy of ±(2% of reading + 0.3 µm) for plating and paint on small parts.
LS238 (5 models) · Coating Thickness Gauges
Handheld paint thickness gauge with a 3500 µm range, automatic recognition of steel, galvanised steel, aluminium and plastic substrates, and a putty detection warning for used-car inspection.
LS310 (2 models) · Water Quality Analyzers
Pen-type water quality tester reading COD, TOC, UV275, TDS, conductivity and temperature in one immersion, with a four-colour score display and an IP67 probe.
MIK-pH8.5 (3 models) · pH Analyzers
Panel-mount pH and ORP controllers in three tiers, from a 4.3 inch display with two isolated current outputs and three alarm contacts down to a 96 x 96 mm case with one output, all reading pH to ±0.02 from a single glass or antimony electrode.
OHR-C01 (3 models) · Temperature Calibrators
Handheld temperature calibrator that measures and sources thermocouple and resistance signals, with cold-junction compensation, step or ramp output and a colour trend display.
PG6 · Photoelectric Sensors
Photoelectric sensors with background suppression, in diffuse, through-beam and retro-reflective forms, sensing from 100 mm to 15 m with a 1 ms response and IP67 sealing.
PH848 (5 models) · pH Meters
Pen type pH meters in five models across two accuracy grades, with the electrode and the display in one hand-held body, automatic temperature compensation and a selectable probe form.
PW9800 (5 models) · Power Meters
Single-phase power meter range with ratings from 5 mA to 200 A, four-window LED display, five readings per second and optional RS232, RS485 or relay output.
QJ300N (4 models) · Electrical Test Equipment
Linear bench supply, 30 V at 3 or 5 A, with 1 mVrms ripple, fine and coarse adjustment on one knob, three stored settings and an option for USB control.
SJ2511 (6 models) · Electrical Test Equipment
Bench four-wire DC resistance meters covering 0.01 µΩ to 2.4 GΩ across the group, with basic accuracy from 0.006% to 0.1%, test current to 10 A and three-level comparator sorting.
SJ2663 (4 models) · Electrical Test Equipment
Four-point probe testers that read sheet resistance, resistivity and conductivity on wafers, films, coatings and bulk samples, with thickness preset and 3% sheet resistance accuracy.
SJ2682A (6 models) · Insulation Resistance Testers
Benchtop insulation resistance meter with programmable direct voltage from 0.5 V, resistance ranges to 100 PΩ on the top model, micro-current measurement from 0.1 fA and four-bin sorting.
SJ5013 (3 models) · Electrical Test Equipment
Programmable insulation testers that read volume resistivity, surface resistivity, insulation resistance and leakage current on rubber, film, fabric, powder and liquid specimens, up to 100 PΩ at 1000 V.
SJ5511 (2 models) · Electrical Test Equipment
Four-terminal conductor testers that read resistance, resistivity and conductivity on wire and bar from 0.02 mm diameter, with 0.02% basic accuracy and up to 10 A test current.
SJ7110 (6 models) · Electrical Safety Testers
Programmable safety tester range applying up to 5 kV AC or 6 kV DC, measuring leakage current against preset limits and insulation resistance to 50 GΩ, with arc detection and ten memory groups.
SJ9800 (5 models) · Power Meters
Benchtop electrical parameter meter with four LED windows showing voltage, current, power and power factor together, 0.5 class accuracy, automatic range switching and optional serial communication.
TCP-400 (4 models) · Temperature Recorders
Benchtop multi-channel temperature recorder for 8 to 64 thermocouple inputs, with a colour touchscreen, per-channel correction, four-level alarms and USB logging.
TH100 (4 models) · Hardness Testers
Portable Leeb hardness tester reading HL and converting to HB, HRC, HRB, HRA, HV and HS in one key, with a D impact device, 360° measurement and ten built-in materials.
TH1941 (6 models) · Digital Multimeters
Benchtop digital multimeter range in 4½, 5½ and 6½ digit models, with dual VFD or colour LCD displays, DCV to 1000 V, four-wire resistance and USB, GPIB or RS232 control.
TH2689 (4 models) · LCR Meters
Bench capacitor leakage testers with adjustable test voltage, leakage current measurement down to the nanoamp region, insulation resistance to 99.99 GΩ, timed charging and comparator limits.
TH2822A (4 models) · LCR Meters
Four handheld LCR meters covering 100 Hz to 100 kHz, with 0.25% or 0.1% basic accuracy, a dual parameter backlit display, automatic range and Mini-USB control, for measuring inductors, capacitors and resistors away from the bench.
TH2882A-3 (3 models) · LCR Meters
Impulse winding testers that apply a high-voltage pulse to a coil and compare the response waveform against a reference, for finding inter-turn shorts, weak insulation and winding faults in single-phase and three-phase parts.
TH9310 (6 models) · Electrical Safety Testers
Programmable safety tester with a 480 by 272 TFT display, AC and DC withstand voltage to 6 kV, insulation resistance to 10 GΩ, twenty test files of twenty steps and arc detection.
TT220 (3 models) · Coating Thickness Gauges
Magnetic and eddy current coating thickness gauge measuring 0 to 1250 µm on steel and aluminium, with automatic probe identification, statistics, limit alarms and 500 stored readings.
YP4000 (3 models) · Temperature Recorders
Touchscreen temperature recorder for 8 to 64 isolated inputs, with four-level alarms, internal storage that survives power loss and wireless viewing from a PC or phone.
YP4035 (7 models) · Electrical Test Equipment
Programmable AC source from 350 VA to 10 kVA, with 45 to 400 Hz output, two voltage ranges, 2% distortion and RS-232 control for bench and line testing.
YP9950 (3 models) · Electrical Safety Testers
Touch screen safety performance tester combining withstand, ground bond, insulation, leakage and electrical parameter measurement in one sequence, in three configurations.
YPR-YBS-WY · Pressure Calibrators
Battery-powered pressure calibrator with an integral hand pump, a 24 VDC loop supply and simultaneous pressure and current display, covering vacuum to 60 MPa including hydraulic ranges.
ZX5560B (5 models) · Electrical Test Equipment
Four-terminal battery testers that read internal resistance and terminal voltage together, from 0.1 µΩ to 3.1 kΩ and up to 1500 V DC, with bin sorting and handler output.
ZX70A-200K (4 models) · LCR Meters
Bench impedance analyzers covering 20 Hz to 5 MHz for piezoelectric ceramics, crystals and ultrasonic transducers, with four-wire Kelvin ports, frequency sweeps and a three-level comparator.
ZX8510BN (5 models) · LCR Meters
Compact bench LCR bridges with four to ten test frequencies up to 100 kHz, basic accuracy from 0.2% to 0.05%, four-wire Kelvin terminals and three or four-bin sorting.
ZX8816 · LCR Meters
Pulse winding tester for coils from 0.1 µH to 1 mH, with four-terminal sensing, voltage compensation, breakdown voltage analysis, a 200 MHz sampler and a fastest test time of 18 ms.
ZX9320SA-2 (4 models) · Electrical Safety Testers
Compact scanning safety tester with two, four or eight channels, AC and DC withstand, insulation resistance to 50 GΩ and nine-level arc detection.
Frequently asked
The questions that come up before an order. If yours is not here, send it with the duty and we will answer it alongside the quotation.
Not by itself. Resolution is what the display shows; accuracy is how close the reading is to the truth. For inspection decisions the accuracy and the measurement uncertainty are what matter, and a fine display on an ordinary instrument can make a marginal part look acceptable.
Because the tolerance is fixed by the drawing or the standard, while the instrument is still a choice. Starting from the instrument and writing the acceptance rule around it means the criterion drifts to fit whatever was bought, which is the wrong direction for a quality record.
Mainly in the time available. In-process measurement has to be quick enough not to hold the line, which favours robust, fast instruments over the most accurate ones, while final inspection can take longer and usually has a documentation requirement attached.
Where the part has to survive the inspection, yes. Where it does not, a destructive method may give a more direct answer, and the decision usually comes down to whether the sample can be sacrificed and what the acceptance criterion actually describes.
Choosing from the instrument specification forwards and then judging parts against whatever the instrument happens to resolve. The second most common is comparing a resolution figure against an accuracy requirement as though they were the same number.
Where the result is a quality record, they do, and the interval has to be one the customer accepts. That is a documentation requirement rather than a performance one, but it is just as capable of invalidating a result after the fact.
Send the measurand, the range and the conditions, and we will confirm the instrument family, the configuration and the lead time.
Request for quotation
Send the technical detail and we will confirm availability, lead time and terms. In-stock items ship within 48 hours; customized specifications typically take 2-10 days. Minimum order quantity is 1 pc.