Inspection Equipment | McMaster-Carr

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Alcohol-Based Solvents

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8,315 Products

Most Likely Products

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

125 products

Bench Centers

Inspect cylindrical parts for irregularities that could cause wobbles or vibrations

5 products

Tooling Balls

Create a physical reference point for aligning workpieces in fixturing

45 products

V-Blocks

Hold round workpieces

40 products

Height Gauges

Measure an object's height and mark workpieces for machining

37 products

Magnetic Field Indicators

Measure the strength of a magnetic field in gauss

11 products

All Results

Measuring and Inspecting

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

125 products

Bench Centers

Inspect cylindrical parts for irregularities that could cause wobbles or vibrations

5 products

Variance Indicators

Identify small dimensional differences when checking part quality and alignment

264 products

Variance Indicator Depth Base Attachments

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

7 products

Variance Indicator Holders

Position and hold variance indicators in place for accurate readings

52 products

Height Gauges

Measure an object's height and mark workpieces for machining

37 products

Calipers

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

210 products

Gauge Blocks

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

738 products

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

109 products

Welding Gauges

Check alignment, corner dimensions, and other weld measurements

3 products

Bore Gauge Calibrators

Set and check the accuracy of two-point bore gauges

1 product

Bore Gauge Heads

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

19 products

Chamfer Gauges

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

21 products

Ring Gauges

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

854 products

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

381 products

Machine Tool Indicators

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

6 products

Surface Plates

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

51 products

Depth Gauges

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

36 products

Plug Gauges

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

1,027 products

Thread Size Identifiers

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

44 products

Variance Indicator Collets

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

4 products

Coordinate Measurement Machine Probes

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

24 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

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

2 products

Countersink Gauges

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

24 products

Grind Gauges

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

4 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

Magnetic Field Indicators

Measure the strength of a magnetic field in gauss

11 products

Passivation Testers

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

1 product

Hardness Testers

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

30 products

Surface Roughness Testers

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

1 product

Density Meters

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

42 products

Borescopes

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

14 products

Optical Comparators

Magnify your part to check for dimensional accuracy and surface defects

4 products

Ultraviolet Inspection Lights

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

12 products

Tamper-Evident Paint

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

12 products

Magnifiers

Workstation, hand-held, headband, and eyeglass magnifiers

171 products

Microscopes

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

18 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

Flaw-Detecting Dyes

Reveal flaws and cracks in nonporous material by turning them red under natural light

2 products

Inspection Mirrors

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

69 products

Machine Vision Cameras

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

19 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

2 products

Inspection Cameras

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

2 products

Microscope Eyepiece Cameras

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

1 product

Machine Vision Lights

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

36 products

Power Consumption Meters

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

1 product

Smoke Candles

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

4 products

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

Multimeters

Take current, voltage, resistance, and other electrical measurements

109 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

Leak-Detecting Dyes

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

27 products

Voltage Detectors

Check for voltage in receptacles, cables, and electrical components

13 products

Oscilloscopes

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

1 product

Smoke Pens

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

1 product

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

Electrical Resistance Meters

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

4 products

Gas Leak Detectors

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

23 products

Voltage Meters

Measure voltage in electrical components

7 products

Radiation Detectors

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

5 products

Current Detectors

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

1 product

Insulation Testers

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

9 products

Motor Phase Sequence Testers

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

1 product

Electronic-Component Testers

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

4 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

2 products

Oscilloscope/Multimeters

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

4 products

Decade Boxes

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

3 products

Laser Levels

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

20 products

Vibration Monitors

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

10 products

Light Meters

Measure light quality and intensity

18 products

Shaft Alignment Kits

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

9 products

Torque Gauges

Test the accuracy of torque wrenches and screwdrivers

80 products

Levels

Ensure surfaces are completely horizontal or vertical

189 products

Tachometers

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

1 product

Vibration Meters

Spot-check vibration to gauge the health of your machine

6 products

Compression Testers

Check engine compression to maintain top performance

6 products

Stroboscopes

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

13 products

Combustion Analyzers

Measure boiler and furnace combustion efficiency

1 product

Stethoscopes

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

8 products

Hour Meters

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

48 products

Force Gauges

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

117 products

Inspection Indicators

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

4 products

Alignment Lasers

Project a line or dot as a reference point to ensure equipment is properly positioned

37 products

Level Mounts

Strap to nonmagnetic surfaces to attach a magnetic level

1 product

Level Vials

Replace vials in levels or equipment

19 products

Pipe Flange Aligners

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

17 products

Gloss Meters

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

2 products

Color Calibrators

Calibrate your color meter to identify colors with precision

1 product

Color Meters

Ensure consistent coloring on products such as labels and packaging

1 product

Fuel Injection Pressure Testers

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

1 product

Fabricating and Machining

Tooling Balls

Create a physical reference point for aligning workpieces in fixturing

45 products

V-Blocks

Hold round workpieces

40 products

Angle Plates

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

61 products

Fixture Squares

Build different fixtures on multiple sides of the same block

18 products

Setup Blocks

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

6 products

Fixture Tables

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

2 products

Sine Plates

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

4 products

Multitools

A variety of tools and blades all in one

3 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 Blaster Windows

Replace the window on your abrasive blasting cabinet

3 products

Magnetic Retrievers

Pick up screws, nuts, and other small magnetic objects

41 products

Retrievers

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

1 product

Fluid Handling

Sights

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

231 products

Flow Sights

Visually confirm flow and inspect liquid color and clarity

152 products

Gauge Glass

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

129 products

Flow Transmitters

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

84 products

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

2 products

Hose and Hose Fittings

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

2 products

Lighting

Flashlight Magnifiers

Turn your flashlight into an illuminated magnifying glass

3 products

Flashlights

Direct a beam of light to precisely where it’s needed

83 products

Portable Work Lights

Bring lighting to poorly lit or completely dark areas

148 products

Headlamps

Keep your hands free by wearing a flashlight on your head

25 products

Safety Equipment

Gloves

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

6 products

Bump Caps

Guard against minor head bumps and scrapes

1 product

Welding Helmets

Guard against scratches and weld spatter better than face shields

1 product

Hats

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

1 product

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

2 products

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

2 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

2 products

Hydrogen Sulfide Detectors

Alarms and lights alert you to high levels of hydrogen sulfide

2 products

Fastening and Joining

Electrical

Electrically open and close circuits to control power to lights, motors, and other equipment

5 products

HMI Covers

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

114 products

Electrical Enclosure Inspection Windows

View components without exposing them to dust and moisture

35 products

Sensor Switch Transmitters

Monitor objects, switch equipment on and off, and send data to control systems with a single device

1 product

Material Handling

Conveyors

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

3 products

Forklift Fork Level Indicators

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

1 product

Containers, Storage, and Furniture

Variance Indicator Cases

Specially fitted to store and transport variance indicators

6 products

Density Meter Jars

Add liquid and immerse a density meter until it floats for precise readings

6 products

Facility and Grounds Maintenance

Paint

Renew, enhance, protect, and change the color of surfaces

1 product

Heating, Ventilation, and Air Conditioning

Duct and Duct Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

53 products

Building and Machinery Hardware

Lockout Procedure Stations

Store all of your lockout safety procedure forms in one place

3 products

Positioning Arms

Mount and position tools, small electronics, and displays

3 products

Lockouts

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

250 products

Access Panels

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

161 products

Key-Control Cabinets

Lock and keep track of keys in a central location

23 products

Roof Hatches

Access the roof from inside your building

6 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

Communication

Tamper-Evident Seals

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

84 products