Metric Indicators | McMaster-Carr

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2,959 Products

Variance Indicators

Electronic Plunger Variance Indicators

Mitutoyo Electronic Plunger Variance Indicators

Read measurements on an LCD instead of a dial

21 products

Easy-Read Mitutoyo Electronic Plunger Variance Indicators with Calibration Certificate

The larger LCD is easier to read than other Mitutoyo indicators

28 products

Mitutoyo Electronic Plunger Variance Indicators with Calibration Certificate

Read measurements on an LCD instead of a dial

17 products

Compact Mitutoyo Electronic Plunger Variance Indicators

The slim design fits in tight spots

9 products

Remote-Reading Compact Electronic Plunger Variance Indicators

Read measurements from up to 4 ft. away

7 products

Coolant-Resistant Economy Electronic Plunger Variance Indicators

IP67 rated to seal out dust, coolant, and water from temporary submersion

11 products

Starrett Electronic Plunger Variance Indicators

Read measurements on an LCD instead of a dial

6 products

Compact Mitutoyo Electronic Plunger Variance Indicators with Calibration Certificate

The slim design fits in tight spots

9 products

Easy-Read Mitutoyo Electronic Plunger Variance Indicators

The larger LCD is easier to read than other Mitutoyo indicators

18 products

Water-Resistant Mitutoyo Electronic Plunger Variance Indicators

IP53 rated for limited protection from dust and spraying water

10 products

Water-Resistant Mitutoyo Electronic Plunger Variance Indicators with Calibration Certificate

IP53 rated for limited protection from dust and spraying water

10 products

Quick-Read Mitutoyo Electronic Plunger Variance Indicators with Calibration Certificate

LCD backlighting changes colors when measurements are out of tolerance

6 products

Electronic Plunger Variance Indicators with Calibration Certificate

Read measurements on an LCD instead of a dial

4 products

Starrett Electronic Plunger Variance Indicators with Calibration Certificate

Read measurements on an LCD instead of a dial

8 products

Economy Electronic Plunger Variance Indicators

Read measurements on an LCD instead of a dial

3 products

Electronic Back Plunger Variance Indicators with Calibration Certificate

Read measurements on the LCD from above

4 products

Quick-Read Mitutoyo Electronic Plunger Variance Indicators

The LCD backlighting changes colors when measurements are out of tolerance

6 products

Economy Electronic Plunger Variance Indicators with Rigid-Arm Magnetic-Base Holder

Stick the magnetic base onto metal surfaces while measuring

6 products

Economy Electronic Plunger Variance Indicators with Fractional Display

Display readings in fractional and decimal increments

2 products

Economy Electronic Quick-Read Plunger Variance Indicators with Calibration Certificate

The LCD backlighting changes colors when measurements are out of tolerance

5 products

Economy Electronic Plunger Variance Indicators with Jointed-Arm Magnetic-Base Holder

Position the arm by adjusting joints at the top, middle, and bottom

5 products

Economy Electronic Plunger Variance Indicators with Flexible-Arm Magnetic-Base Holder

Bend and flex the ball-and-socket arm of the base to position your indicator

5 products

Economy Electronic Plunger Variance Indicators with Magnetic-Base Holder for Uneven Surfaces

Magnetic pins conform to any shape for mounting on uneven surfaces

5 products

Dial Lever Variance Indicators

Mitutoyo Dial Lever Variance Indicators

The lever-style contact point pivots as it comes into contact with a surface

13 products

Mitutoyo Dial Lever Variance Indicator Sets

Include additional contact points and mounting accessories

13 products

Interapid Dial Lever Variance Indicators

Measure larger ranges than with our other lever-style indicators

13 products

Dial Plunger Variance Indicators

Economy Dial Plunger Variance Indicators

The dial moves clockwise as the plunger extends and retracts

4 products

Mitutoyo Plus/Minus Dial Plunger Variance Indicators

Determine variance from a baseline without doing any math

1 product

Continuous Dial Plunger Variance Indicators with Calibration Certificate

The dial moves clockwise as the plunger extends and retracts

8 products

Mitutoyo Plus/Minus Dial Plunger Variance Indicators with Calibration Certificate

Determine variance from a baseline without doing any math

1 product

Plus/Minus Dial Plunger Variance Indicators with Calibration Certificate

Determine variance from a baseline without doing any math

5 products

Combination Dial Plunger Variance Indicators with Calibration Certificate

Take direct and comparative measurements with the same indicator

4 products

Electronic Lever Variance Indicators

Read measurements on an LCD instead of a dial

3 products

Other Products

Variance Indicator Contact Points

Attach to your variance indicator to make contact with the workpiece being measured

37 products

Height Gauges

Measure an object's height and mark workpieces for machining

39 products

Thread Size Identifiers

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

20 products

Depth Gauges

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

50 products

Outside Micrometers

Apply even pressure to objects to measure thickness more precisely than thickness gauges

107 products

Calipers

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

174 products

Variance Indicator Extension Rods

Lengthen the reach of your variance indicator

8 products

Rulers

Horizontal, vertical, circumference, center-finding, and pica rulers

238 products

Variance Indicator Contact Point Adapters

Convert variance indicators to work with inch-size contact points or measure hard-to-reach spots

1 product

Machine Tool Indicator Contact Points

Replace the contact point on your machine tool indicator

2 products

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

49 products

Variance Indicator Clamps

Secure and position indicators, arms, and other components on holders

7 products

Depth Micrometers

Measure slots, counterbores, and other holes more precisely than depth gauges

23 products

Light Meters

Measure light quality and intensity

2 products

Audible Alarms/Indicator Lights

Alert people with both light and sound

25 products

Variance Indicator Lifting Levers

Replace the cap on your variance indicator to help lift the spindle

1 product

Bore Gauge Calibrators

Set and check the accuracy of two-point bore gauges

1 product

Micrometer Heads

Mount on jigs, fixtures, and machine tools to position equipment and measure length

28 products

Computer Monitors

Display information in tough conditions such as on factory floors and outdoor jobsites

9 products

Squareness Gauges

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

3 products

Thickness Gauges

Move the thumb lever to quickly check the thickness of flat stock, pipe, or tubing

34 products

Position Indicators

Track components on rotating spindles or lead screws to help adjust machinery quickly and precisely

30 products

Inside Hole Calipers

Measure hard-to-reach areas, such as internal grooves and slots

12 products

Chemistry Meters

Take water-chemistry measurements more precisely than test strips and swabs

42 products

Plug Gauges

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

301 products

Step Gauges

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

5 products

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

98 products

Density Meters

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

10 products

3D Printer Probes

Map the ups and downs of print surfaces so printers extrude at the proper height

1 product

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

73 products

Chamfer Gauges

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

9 products

Height Gauge Calibrators

Ensure height gauges are accurate

11 products

Parallel Rules

Draw parallel lines, as well as circles, arcs, and angles

1 product

Indicator Lights

Call attention to hazards and changes in status with flashing, strobe, and other lights

16 products

Inside Hole Micrometers

Find the inside diameter of cylinders and rings

9 products

Monitoring Relays

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

3 products

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

83 products

Electronic-Component Testers

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

3 products

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

78 products

Noncontact Temperature Sensors

Monitor the temperature of hazardous, sensitive, and hard-to-reach materials without touching them

6 products

Linear Scales

Measure and display the position of tools on machines, such as lathes, saws, and drill presses

5 products

Air Particle Counters

Monitor indoor dust levels and measure filter efficiency in HVAC systems

1 product

Hour Meters

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

11 products

Audible Alarms

Everything from bells and whistles to horns and sirens

4 products

Decade Boxes

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

3 products

Scales

Bench-top, hanging, floor, and conveyor scales

5 products

Edge Finders

Locate edges, shoulders, center points, and lines on workpieces in milling machines

2 products

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

1 product

Squares

Check 90° angles during layout work with combination, angle, or pipefitters' squares

20 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

15 products

Differential Pressure Gauges

Display the difference in pressure between two points in your air and fluid systems

5 products

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

3 products

Micrometer Check Gauges

Confirm your outside or depth micrometers are accurate

1 product

Outside Micrometer Tips

Adapt your micrometer to measure curved and irregularly shaped objects, such as gear teeth and pipe

1 product

Solenoid Valve Sockets

Pair with plugs or receptacles to connect solenoid components

1 product

Proximity Sensors

Detect the presence or position of objects from a short sensing distance

393 products

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

211 products

Relays

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

93 products

Flowmeters

Measure the flow rate of liquid or gas through your system

70 products

Interface Relays

Isolate input and output circuits to protect PLCs and other controllers

60 products

Load Cells

Measure forces and send them to computers to monitor and trigger actions in machinery

25 products

Counters

Record and display the number of times events or processes occur

21 products

Ultrasonic Sensors

Measure the distance to objects and the level of liquids and materials

20 products

Pipettors

Dispense liquid in accurate, repeatable amounts with the push of a button

22 products

Torque Sensors

Convert manually applied torque into an electrical signal that you can measure and record

22 products

Liquid-Level Tape Measures

Lower into deep containers, such as tanks, to check the level of oil and other fluids

27 products

Flow Transmitters

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

12 products

Force Gauges

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

14 products

Indicating Knobs

Control devices and view settings at a glance

6 products

Pressure Transmitters

Send pressure readings to controllers and remote displays

9 products

Calibration Rods

Check and set micrometers and other measuring tools

8 products

Precision Measuring Tool Sets

Multiple precision measuring tools in one convenient case

10 products

Airflow Meters

Measure airflow in duct, air filters, exhaust hoods, and other air applications

8 products

Differential Pressure and Vacuum Gauges

Show changes in pressure and vacuum to monitor fans, blowers, and filters

6 products

Sights

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

6 products

Torque Gauges

Test the accuracy of torque wrenches and screwdrivers

6 products

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

5 products

Staff Gauges

Typically mounted to walls and tanks for measuring the level of liquids, such as water, fuel, and oil

4 products

Differential Pressure Transmitters

Relay pressure changes in heating, cooling, and pumping systems to controllers and remote displays

3 products

Straightedges

Draw straight lines and check the straightness of surfaces

3 products

Cylinder Position Sensors

Monitor your air cylinder rod's position and turn the cylinder on and off

2 products

Flow Switches

Turn equipment on or off when flow rate reaches a set point

4 products

Layout Compasses

Draw circles and transfer distance measurements

2 products

Temperature and Humidity Transmitters

Regulate heating and cooling by sending temperature and humidity levels to PLCs and controllers

2 products

Bit Adapters

Connect a variety of bits to drills, powered screwdrivers, ratchet wrenches, and other turning tools

1 product

Combination Square Blades

Connect to a combination square head to create a combination square

1 product

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

1 product

Gloss Meters

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

1 product

Liquid-Level Gauges

Monitor fluid levels in containers

1 product

Sound Level Monitors

Continuously measure ambient sound levels to confirm they fall within your programmed thresholds

2 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

8 products

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

1 product