Inspection Equipment | McMaster-Carr

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8,876 Products

Measuring and Inspecting

Calipers

Take inside, outside, and depth measurements with more precision than a ruler

210 products

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

126 products

Thread Size Identifiers

Confirm your fastener's thread size, pitch, or threads per inch

44 products

Bore Gauge Calibrators

Set and check the accuracy of two-point bore gauges

1 product

Height Gauges

Measure an object's height and mark workpieces for machining

49 products

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

381 products

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

738 products

Variance Indicators

Identify small dimensional differences when checking part quality and alignment

344 products

Variance Indicator Holders

Position and hold variance indicators in place for accurate readings

65 products

Bench Centers

Inspect cylindrical parts for irregularities that could cause wobbles or vibrations

5 products

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

120 products

Depth Gauges

Reach into slots, counterbores, and other holes to measure depth

60 products

Coordinate Measurement Machine Probes

Take 3D measurements of workpieces on your CMM or CNC machine to inspect for quality

50 products

Variance Indicator Depth Base Attachments

Insert the stem of your variance indicator to convert it into a depth gauge

7 products

Ring Gauges

Confirm your workpiece's outer diameter or external threads are within tolerance

854 products

Machine Tool Indicators

Find the exact edge of a workpiece without math or guesswork to quickly align your machining setup

6 products

Welding Gauges

Check alignment, corner dimensions, and other weld measurements

3 products

Surface Plates

Extremely flat to give an accurate reference plane for layout and inspection work

51 products

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

1,116 products

Variance Indicator Collets

Hold the stem of plunger-style indicators for custom mounting jobs, such as creating depth gauges

4 products

Calibration Squares

Lay horizontally or vertically on CNC machines to check the position of tools with high precision

2 products

Threaded Hole Location Gauges

Pinpoint the true center of threaded holes to precisely align and measure parts

70 products

Bore Gauge Heads

Swap the head on your Mitutoyo electronic bore gauge for one with a different measuring range

19 products

Squareness Gauges

Check frames and machined parts to see if they are leaning or uneven

3 products

Step Gauges

Check step height, gap width, and distance between slots to make sure machine and engine parts align

5 products

Chamfer Gauges

Check the diameter of chamfered edges to make sure they're within tolerance

21 products

Countersink Gauges

Catch sizing errors in countersunk holes to keep fasteners from protruding and creating weak points

19 products

Height Gauge Calibrators

Ensure height gauges are accurate

11 products

Grind Gauges

Measure how smoothly paint, coatings, and other mixtures are blended

5 products

Ring Gauge Holders

Keep ring gauges still to measure cylindrical parts or threads quickly and repeatedly

17 products

Inside/Outside Diameter Gauges

Mount your variance indicator to measure the diameter of rims, grooves, and shallow holes

2 products

Multimeters

Take current, voltage, resistance, and other electrical measurements

108 products

Power Consumption Meters

Measure the amount of power your devices consume to help calculate energy costs

1 product

Insulation Testers

Measure insulation quality in motors, generators, and other electrical equipment

9 products

Oscilloscopes

Analyze problems with electrical equipment by graphing voltage and other electrical waveforms

1 product

Electrical Resistance Meters

Prevent damage to electronics by checking that surfaces won't discharge static electricity

4 products

Voltage Meters

Measure voltage in electrical components

7 products

Oscilloscope/Multimeters

Perform electrical tests, record data, and view a graph of electrical waveforms

4 products

Voltage Detectors

Check for voltage in receptacles, cables, and electrical components

13 products

Motor Phase Sequence Testers

Analyze a motor's rotation and electrical system to confirm proper wiring

1 product

Electrical Outlet Testers

Confirm proper wiring by checking for open circuits

2 products

Line Break Detectors

Check for continuity in circuits

7 products

Spring Test Probes

Use in spring test probe sockets to test for continuity and damaged components in circuit boards

79 products

Patch Cords

Make point-to-point connections between electrical testing equipment and your devices

12 products

Electrical Panel Meters

See the amount of electricity used to run motors, generators, and other equipment

84 products

Spring Test Probe Sockets

Pair with spring test probes to test for continuity and damaged components in circuit boards

23 products

Circuit Breaker Identifiers

Determine which circuit breaker is connected to an electrical receptacle

4 products

Circuit Tracers

Locate cables behind walls, check for continuity, and identify circuit breakers

2 products

Power Consumption Data Loggers

Record data to monitor energy usage and fix intermittent problems, such as voltage spikes

4 products

Current Meters

Measure current without interrupting the circuit

3 products

Current Detectors

Check for AC current and voltage without making direct contact with wire

1 product

Electronic-Component Testers

Test, identify, and troubleshoot components such as circuit boards and diodes

4 products

Decade Boxes

Test and troubleshoot circuits without needing to solder capacitors or replace resistors

3 products

Hardness Testers

Determine the Rockwell, Brinell, or Durometer hardness of any material

38 products

Passivation Testers

Detect iron in stainless steel parts to confirm they're properly passivated

1 product

Magnetic Field Indicators

Measure the strength of a magnetic field in gauss

12 products

Density Meters

Measure the density of liquids to check concentration; test battery fluid for a charge

48 products

Surface Roughness Testers

Trace the surface of a part to calculate its roughness parameters in Ra, Rp, and Rq

8 products

Light Meters

Measure light quality and intensity

20 products

Inspection Mirrors

Reach around corners and obstructions to inspect hard-to-see areas

93 products

Color Calibrators

Calibrate your color meter to identify colors with precision

1 product

Optical Comparators

Magnify your part to check for dimensional accuracy and surface defects

13 products

Magnifiers

Workstation, hand-held, headband, and eyeglass magnifiers

191 products

Color Meters

Ensure consistent coloring on products such as labels and packaging

2 products

Ultraviolet Inspection Lights

Shine on equipment to detect traces left behind by leaks, rodents, and other contaminants

16 products

Tamper-Evident Paint

Cracks from movement when dried on equipment to indicate vibration or tampering

12 products

Microscopes

Enlarge the view of small parts and samples for inspection and assembly

41 products

Magnetic Particles

Apply to metal and magnetize with a yoke to show defects on and below the surface

6 products

Magnetic Particle Flaw Detection Kits

Everything you need to detect imperfections on or below metal surfaces

2 products

Borescopes

Insert the camera into hard-to-reach areas to view them from your smart device or the display

14 products

Flaw-Detecting Dyes

Reveal cracks and surface flaws using colored dye under natural or UV light

7 products

Machine Vision Cameras

Inspect objects on conveyor lines for defects such as surface flaws and missing screws

17 products

Gloss Meters

Measure the gloss of paint, coatings, and surfaces to ensure each product is as shiny as the last

2 products

Microscope Illuminators

Shine a light on samples for a better view

3 products

Magnetic Yokes

Pair with magnetic particles to find defects on or below metal surfaces

5 products

Inspection Cameras

Reach into tight and hard-to-access spots and stream the inspection on your phone or tablet

3 products

Microscope Eyepiece Cameras

Place over your microscope's eyepiece to view a live feed of extra-fine details

1 product

Equipment Monitoring Cameras

Place inside machines to keep an eye on harsh industrial processes from a safe distance

2 products

Machine Vision Lights

Illuminate an object so your machine vision camera can capture detailed images for inspection

49 products

Vibration Meters

Spot-check vibration to gauge the health of your machine

8 products

Vibration Monitors

Mount to your machine to continuously monitor vibration and ensure it stays within the proper range

16 products

Tachometers

Measure the speed of rotating parts on machines such as shafts, gears, and belts

2 products

Stroboscopes

Shine a bright flashing light at moving belts and pulleys to measure speed and detect wear

23 products

Force Gauges

Test objects to see how much tension and compression force they can bear

133 products

Torque Gauges

Test the accuracy of torque wrenches and screwdrivers

88 products

Laser Levels

Project level references onto surfaces when installing drop ceilings, pipe, or conveyors

22 products

Shaft Alignment Kits

Confirm that shafts are aligned or measure the degree of their misalignment

9 products

Levels

Ensure surfaces are completely horizontal or vertical

187 products

Compression Testers

Check engine compression to maintain top performance

9 products

Leak-Detecting Dyes

Bright colors help you spot leaks in water and hydraulic systems without using ultraviolet light

30 products

Smoke Pens

Produce smoke to observe airflow and detect leaks in HVAC systems; reusable, unlike smoke candles

2 products

Gas Leak Detectors

Find gas leaks in pipes, tubes, fittings, tanks, cylinders, and valves

34 products

Combustion Analyzers

Measure boiler and furnace combustion efficiency

3 products

Stethoscopes

Detect internal mechanical problems like worn parts, excessive vibration, and fluid leaks

8 products

Radiation Detectors

Test for radiation, even in low amounts or from microwave ovens

6 products

Hour Meters

Display running time on a machine so you can schedule preventative maintenance

51 products

Smoke Candles

Light the wick for a short burst of smoke to observe airflow and detect leaks in HVAC systems

4 products

Inspection Indicators

Mount to your equipment for a signal when it's time for maintenance or inspection

4 products

Alignment Lasers

Project a dot, line, or crosshair line as a reference point to position equipment

61 products

Level Mounts

Strap to nonmagnetic surfaces to attach a magnetic level

2 products

Level Vials

Replace vials in levels or equipment

16 products

Smoke Pellets

Detect airflow and leaks in HVAC systems near server rooms and other areas with electronics

4 products

Smoke Powder

No flame needed—release a burst of powder to detect airflow and leaks in HVAC systems

3 products

Pipe Flange Aligners

Line up flange holes so they bolt securely and connections won’t leak

21 products

Fuel Injection Pressure Testers

Check fuel injection pressure to maintain your car's gas mileage

1 product

Inspection Parallels

Line up workpieces for precise machining, or support them at a level height for inspecting

8 products

Inspection Setup Blocks

Line up workpieces at precise heights and angles for machining, measuring, and inspecting

2 products

Inspection V-Blocks

Cradle rods and other round workpieces for precision measuring or inspecting

10 products

Fabricating and Machining

Tooling Balls

Create a physical reference point for aligning workpieces in fixturing

52 products

V-Blocks

Hold round workpieces

72 products

Angle Plates

Ensure accurate right angles and hold workpieces and fixtures perpendicular to your machine table

64 products

Sine Plates

Use with gauge blocks to measure angles on your workpiece or set up a part for precision grinding

4 products

Fixture Tables

Add clamps, brackets, and other components to build fixtures for welding and assembly

2 products

Fixture Squares

Build different fixtures on multiple sides of the same block

38 products

Parallels

Raise workpieces above your vise to create clearance for cutting tools

92 products

Setup Blocks

Use as mounting bases and supports to ensure accurate angles and spacing

31 products

Multitools

A variety of tools and blades all in one

3 products

Retrievers

Grab and pull objects out of hard-to-reach spots

1 product

Magnetic Retrievers

Pick up screws, nuts, and other small magnetic objects

41 products

Lighters

Light flames and recharge for repeated long-term use

2 products

Ultraviolet Curing Lamps

Cure adhesives and sealants, inspect parts for quality, or detect leaks

7 products

Abrasive Blasting Cabinet Windows

Replace the window on your abrasive blasting cabinet

3 products

Building and Machinery Hardware

Lockouts

Ensure that machines stay turned off to prevent accidents during maintenance work

266 products

Lockout Procedure Stations

Store all of your lockout safety procedure forms in one place

4 products

Positioning Arms

Mount and position tools and other small equipment

3 products

Access Panels

Install in ceilings, walls, concrete floors, and tanks to access and inspect inside

167 products

Key-Control Cabinets

Lock and keep track of keys in a central location

20 products

Roof Hatches

Access the roof from inside your building

7 products

Key Racks

Store and quickly identify keys with color-coded and labeled tags

2 products

Key-Control Cases

Organize, transport, and store keys in portable zippered cases

2 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Covers

Replace Fibox enclosure covers

43 products

Electrical Enclosure Inspection Windows

View components without exposing them to dust and moisture

35 products

HMI Covers

Access HMI devices and other controls mounted to an enclosure while keeping out liquids and dust

117 products

Monitoring Relays

Trip circuits or sound an alarm when voltage, current, or other limits are exceeded

31 products

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

1 product

Lighting

Portable Work Lights

Bring lighting to poorly lit or completely dark areas

166 products

Flashlights

Direct a beam of light to where it’s needed or provide 360° of lighting

134 products

Headlamps

Keep your hands free by wearing a flashlight on your head

28 products

Flashlight Magnifiers

Turn your flashlight into an illuminated magnifying glass

4 products

Portable Work Light Mounts

A suction cup holds lights with a magnet to glass, aluminum, and other nonmagnetic surfaces

1 product

Neck Lights

Wear a flashlight around your neck to keep your hands free

2 products

Material Handling

Forklift Fork Level Indicators

Mount to your forklift's mast to check if forks are level from the driver's seat

1 product

Conveyors

Roller, skate wheel, ball transfer, belt, and vacuum conveyors

18 products

Safety Equipment

Gloves

Shield your hands from cuts, heat, cold, chemical splashes, and electrical and welding sparks

9 products

Bump Caps

Guard against minor head bumps and scrapes

1 product

Welding Helmets

Guard against scratches and weld spatter better than face shields

9 products

Hats

Shield your head from sun, rain, cold, and sparks

2 products

Hot Stick Heads

Swap out the head on your hot stick to operate switches, pull cotter pins, and more

10 products

Welding Lens Magnifiers

Attach to welding lenses to enhance details

8 products

Multi-Gas Detectors

Monitor air for carbon monoxide and combustible gases including methane, hydrogen, and propane

7 products

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

3 products

Carbon Dioxide Meters

Measure and display real-time carbon dioxide levels for indoor ventilation quality

1 product

Carbon Monoxide Detectors

Alarms, lights, or color changes alert you to the presence of carbon monoxide

6 products

Hydrogen Sulfide Detectors

Alarms and lights alert you to high levels of hydrogen sulfide

6 products

Radiation Dose Meters

Attach to your pocket or nearby objects to track the accumulated radiation you've been exposed to

3 products

Fluid Handling

Flow Sights

Visually confirm flow and inspect liquid color and clarity

154 products

Sights

Observe and monitor the contents of pipes, tanks, and other containers

243 products

Gauge Glass

Create or repair liquid-level gauges to monitor fluid levels in containers

138 products

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

84 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

2 products

Tube Sampling Ports

Take samples from sanitary tubing without pausing or contaminating your line

2 products

Communication

Tamper-Evident Seals

Secure hasps, latches, and other connections to visibly indicate tampering

84 products

Signs

Everything from accident prevention to traffic control to exit signs

22 products