Paint Gauges | McMaster-Carr

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System of Measurement

Coating Thickness

For Use On

Specifications Met

Display Type

Material

For Coating Type

Export Control Classification Number (ECCN)

RoHS

REACH

DFARS Specialty Metals

Exempt

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Width

Depth

Probe Material

Height

Length

Power Source

Electrical Connection

Bluetooth

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Reading Storage Capacity

1,000

250,000

Viscosity

1 cP to 6,000,000 cP

60 cP to 320,000,000 cP

40 cSt to 230 cSt

150 cSt to 790 cSt

For Testing

Very Thin Oils

Thin Oils and Lacquers

Medium Oils and Mixed Paints

Heavy Liquids

Very Heavy Liquids and Mixtures

Probe Type

Grind Size

8 Hegman to 6.8 Hegman

Diameter

Measurement Unit

40 Products

Wet-Coating-Thickness Gauges


Front	Back

Measure the thickness of wet coatings such as paint. These gauges display readings in mils on one side and microns on the other side. For readings in mils, one mil equals 0.001".

		For Coating Thk.
	For Coating Type	US Customary, mil	Metric, μm	Wd.	Lg.	Material	Specs. Met		Each
For Aluminum, Copper, Plastic, Stainless Steel, Steel



		Nonconductive, Nonmagnetic	1 to 118	25 to 3,000	2 5/8"	3"	Aluminum	ASTM D4414, ISO 2808	2586N1	000000

Digital Coating-Thickness Gauges with Certificate of Calibration


Removable Probe with 3 ft. Cable	Built-In Probe

These gauges come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. Use them to measure coatings such as paint, galvanizing, plating, and enamel. They display readings in mils and microns; for readings in mils, one mil equals 0.001". All have a wear-resistant ruby probe.

		For Coating Thk.
	For Coating Type	US Customary, mil	Metric, μm	Accuracy	Wd.	Ht.	Dp.	Reading Storage Cap.	Batteries Included	Includes	Features	Specs. Met		Each
For Aluminum, Copper, Stainless Steel, Steel



		Nonconductive, Nonmagnetic	0 to 60	0 to 1,500	±1%	2 3/8"	5 3/8"	1 1/8"	1,000	Yes	—	Built-In Probe High/Low Limits	ASTM B499, ASTM D1186, ASTM D1400, ISO 2808	1453T65	000000000


		Nonconductive, Nonmagnetic	0 to 60	0 to 1,500	±1%	2 3/8"	5 3/8"	1 1/8"	1,000	Yes	Removable Probe with 3 ft. Cable	High/Low Limits	ASTM B499, ASTM D1186, ASTM D1400, ISO 2808	1453T73	00000000


		For Steel



				Nonmagnetic	0 to 60	0 to 1,500	±1%	2 3/8"	5 3/8"	1 1/8"	1,000	Yes	—	Built-In Probe High/Low Limits	ASTM B499, ASTM D1186, ASTM D1400, ISO 2808	1453T61	000000

Digital Coating-Thickness Gauges

Measure coatings such as paint, galvanizing, plating, and enamel. These gauges display readings in mils and microns; for readings in mils, one mil equals 0.001". They have a wear-resistant ruby probe.

		For Coating Thk.
	For Coating Type	US Customary, mil	Metric, μm	Accuracy	Wd.	Ht.	Dp.	Batteries Included	Features		Each
For Aluminum, Copper, Stainless Steel, Steel



		Nonconductive, Nonmagnetic	0 to 40	0 to 1,000	±3%	1 1/2"	4 1/4"	1"	Yes	Built-In Probe	1453T49	0000000


		For Steel



				Nonmagnetic	0 to 40	0 to 1,000	±3%	1 1/2"	4 1/4"	1"	Yes	Built-In Probe	1453T48	000000

Coating-Thickness Gauges

Use these gauges to measure nonmagnetic coatings such as paint, galvanizing, plating, and enamel on steel. All come with a calibration certificate traceable to NIST that states they've passed a test for accuracy.

Hold the probe on your material for a quick reading. These gauges display readings in mils; one mil equals 0.001". They have a wear-resistant carbide probe and a go/no-go button for rapid measurement. A V-groove in the base provides stability on curved surfaces.

	For Coating Thk., mil	Accuracy	Wd.	Ht.	Dp.	Features		Each
For Steel



	Nonmagnetic	0 to 8	±5%	8 1/2"	2"	1 1/4"	Built-In Probe Go/No-Button	1378T21	0000000


	Nonmagnetic	0 to 80	±5%	8 1/2"	2"	1 1/4"	Built-In Probe Go/No-Button	1378T22	000000

Economy Coating-Thickness Gauges for Hard-to-Reach Areas

	For Coating Thk., mil	Accuracy	Lg.	Dia.		Each
For Steel



	Nonmagnetic	1 to 15	±0.2 mil	5 1/4"	1/2"	14055T11	000000

Coating-Thickness Gauge Inspection Kits

With three included probes, the gauge in these kits goes beyond a typical check for coating thickness. It also measures surface profile and environmental conditions, such as temperature. Kits include everything you need for thorough tests whether you’re inspecting a surface that’s painted, powdered, or plated. Just swap out probes to measure what you need. Use the plate and shims to practice measurements and ensure the probe is working properly. The glass plate and metal shims work with the surface profile probe. The plastic shims work with the coating thickness probe. Easy to use, the gauge’s touch screen guides you through measurements step-by-step.

Switch between scan modes for full control over how you measure, from single-point tests to continuous readings. You can even find stats and create presets for repeated measurements. For long-term tracking, the gauge stores up to 250,000 results from multiple probes in up to 1,000 batches. See trends in real time with live graphing. To help you comply with ISO, ASTM, SSPC-PA, and IMO coating standards, set criteria for go/no-go tests.

Thanks to a compatible app, you can add notes and images to readings or make reports on the go. For exporting into programs such as Excel or making multimedia reports in templates, use the included software.

Choose kits based on coating and surface types.

Built-In Probe—A built-in probe lets you use the gauge one-handed—no extended probe to maneuver.

Removable Probe with 3 ft. Cable—A removable probe means you can measure underwater and up to 3 ft. away. The waterproof probes are at the end of sealed cable, so you can reach surfaces without submerging the gauge.

For Nonconductive Coatings—Kits with probes for both nonconductive and nonmagnetic coatings include a thickness probe that automatically identifies the coating and surface material.

For 0 mil to 250 mil Thick Coating—Kits with probes for 0-250 mil coating thickness are ideal for testing epoxies, flame-retardant finishes, and other thick coatings.

		For Coating Thk.
	For Coating Type	US Customary, mil	Metric, μm	Accuracy	Reading Storage Cap.	Batteries Included	Data Connection	Electrical Connection	Includes	Features	Specs. Met		Each
For Aluminum, Copper, Stainless Steel, Steel







				Built-In Probe

				Nonconductive, Nonmagnetic	0 to 60	0 to 1,500	±1%	250,000	Yes	Bluetooth	USB-C	Coating Thickness Probe Environmental Probe Surface Profile Probe Gauge Body Zero-Setting Glass Plate Plastic and Metal Shims Lens Shield Rubber Holster Wrist Strap USB Cable Case	Alarm Batch Mode Limited Count Coverage Scan Mode Live Graphing Normal Scan Mode Statistics Scan Mode Zero-Position Memory (ABS) Zero-Set Button	ASTM D4417, ISO 19840	6800N15	000000000




						Removable Probe with 3 ft. Cable

						Nonconductive, Nonmagnetic	0 to 60	0 to 1,500	±1%	250,000	Yes	Bluetooth	USB-C	Coating Thickness Probe Environmental Probe Surface Profile Probe Gauge Body Zero-Setting Glass Plate Plastic and Metal Shims Lens Shield Rubber Holster Wrist Strap USB Cable Case	Alarm Batch Mode Limited Count Coverage Scan Mode Live Graphing Normal Scan Mode Statistics Scan Mode Zero-Position Memory (ABS) Zero-Set Button	ASTM D4417, ISO 19840	6800N16	00000000


						For Steel







										Built-In Probe

										Nonmagnetic	0 to 60	0 to 1,500	±1%	250,000	Yes	Bluetooth	USB-C	Coating Thickness Probe Environmental Probe Surface Profile Probe Gauge Body Zero-Setting Glass Plate Plastic and Metal Shims Lens Shield Rubber Holster Wrist Strap USB Cable Case	Alarm Batch Mode Limited Count Coverage Scan Mode Live Graphing Normal Scan Mode Statistics Scan Mode Zero-Position Memory (ABS) Zero-Set Button	ASTM D4417, ISO 19840	6800N11	00000000


										Nonmagnetic	0 to 250	0 to 6,000	±3%	250,000	Yes	Bluetooth	USB-C	Coating Thickness Probe Environmental Probe Surface Profile Probe Gauge Body Zero-Setting Glass Plate Plastic and Metal Shims Lens Shield Rubber Holster Wrist Strap USB Cable Case	Alarm Batch Mode Limited Count Coverage Scan Mode Live Graphing Normal Scan Mode Statistics Scan Mode Zero-Position Memory (ABS) Zero-Set Button	ASTM D4417, ISO 19840	6800N13	00000000




												Removable Probe with 3 ft. Cable

												Nonmagnetic	0 to 60	0 to 1,500	±1%	250,000	Yes	Bluetooth	USB-C	Coating Thickness Probe Environmental Probe Surface Profile Probe Gauge Body Zero-Setting Glass Plate Plastic and Metal Shims Lens Shield Rubber Holster Wrist Strap USB Cable Case	Alarm Batch Mode Limited Count Coverage Scan Mode Live Graphing Normal Scan Mode Statistics Scan Mode Zero-Position Memory (ABS) Zero-Set Button	ASTM D4417, ISO 19840	6800N12	00000000


												Nonmagnetic	0 to 250	0 to 6,000	±3%	250,000	Yes	Bluetooth	USB-C	Coating Thickness Probe Environmental Probe Surface Profile Probe Gauge Body Zero-Setting Glass Plate Plastic and Metal Shims Lens Shield Rubber Holster Wrist Strap USB Cable Case	Alarm Batch Mode Limited Count Coverage Scan Mode Live Graphing Normal Scan Mode Statistics Scan Mode Zero-Position Memory (ABS) Zero-Set Button	ASTM D4417, ISO 19840	6800N14	00000000

Coating-Thickness Gauges for Hard-to-Reach Areas

These pen-shaped gauges are good for use on hard-to-reach surfaces. Use them to measure nonmagnetic coatings such as paint, galvanizing, plating, and enamel on steel. These gauges display readings in mils and microns. For readings in mils, one mil equals 0.001". They come with a calibration certificate traceable to NIST that states they have passed a test for accuracy.

		For Coating Thk.
	For Coating Type	US Customary, mil	Metric, μm	Accuracy	Lg.	Dia.		Each
For Steel



		Nonmagnetic	1/4 to 20	5 to 500	±10%	5 1/2"	1/4"	1374T25	0000000

Ultrasonic Painted-Surface Thickness Gauges

Measure the thickness of painted metal without removing the coating. The ultrasonic probe provides highly accurate readings. These gauges come with a calibration certificate traceable to NIST that states they have passed a test for accuracy. They also include a USB cord for connecting to your PC. Use the included ultrasonic gel for maximum surface contact.

	For Material Thk.
	US Customary	Metric, mm	Accuracy	Batteries Included	Includes	Features	Specs. Met		Each
For Aluminum, Stainless Steel, Steel



		0.1" to 2 1/2"	2.54 to 63.5	±0.001"	Yes	Ultrasonic Gel USB Cord	Built-In Probe	ASTM E797	8729T73	000000000

Accessories and Replacements for Thickness Gauges

Container Size		Each
4 fl. oz.	8729T81	000000
1 gal.	8729T82	00000

Thickness Gauge Calibration Blocks


4 Steps	5 Steps

Use calibration blocks to calibrate your thickness gauge. All blocks have a serial number and come with a calibration certificate traceable to NIST.

	Step			For Aluminum		For Steel		For Stainless Steel
No. of Steps	Lg.	Wd.	Ht.		Each		Each		Each
4	3/4"	3/4"	1/4"	8489T161	0000000	8489T162	0000000	8489T18	0000000
5	3/4"	3/4"	0.1"	8489T171	000000	8489T172	000000	8489T19	000000

Rotational Viscosity Meters


Meter (Beaker Not Included)	Digital Display

To help ensure batch quality and consistency, these meters use the resistance met by their rotating spindle to measure the viscosity of liquid samples more quickly than manual testers. Results show immediately on a digital display. They also display torque percentage, which is often used by labs. If the torque percentage is outside the ideal range (10%-90%), switch to a different size spindle to improve accuracy. These meters come with multiple spindles to accommodate a wide range of viscosities. Spindles attach to meters magnetically, so you can add them with one hand and there’s little risk of bending them.

These meters require no external programming—switch between samples by making adjustments on the display. Results are not saved, so plug meters into a printer to create a record.

Use these meters with standard 600 ml beakers.

1 cP to 6,000,000 cP Viscosity Range—1 cP-6,000,000 cP meters work with low-viscosity fluids with a viscosity similar to juice, ink, and mouthwash.

60 cP to 320,000,000 cP Viscosity Range—60 cP-320,000,000 cP meters test high-viscosity fluids that are similarly viscous to mayonnaise, peanut butter, and hair gels.

Cannot Be Sold To—They cannot be sold to the regions listed due to import regulations.

										Digital Display			Electrical
	For Testing	Rotation Speed Setting Range, rpm	Accuracy	Repeatability Percentage Range	Temp. Range, ° F	No. of Spindles	Ht.	Wd.	Dp.	Type	Size	Voltage, V AC	No. of Blades	Connection	NEMA Type	Cord Lg., ft.	Includes	Cannot Be Sold To		Each
ABS/Polycarbonate with 304 Stainless Steel Stand and 316 Stainless Steel Spindles







				1 cP to 6,000,000 cP Viscosity Range

				Very Thin Oils, Thin Oils and Lacquers, Medium Oils and Mixed Paints	0 to 200	±1%	-0.2% to 0.2%	32 to 100	4	17 1/2"	14 1/4"	11 1/8"	LCD	3.5"	125	3	Straight Blade	5-15	10	USB Cable	Canada	7864N11	000000000




						60 cP to 320,000,000 cP Viscosity Range

						Medium Oils and Mixed Paints, Heavy Liquids, Very Heavy Liquids and Mixtures	0 to 200	±1%	-0.2% to 0.2%	32 to 100	6	17 1/2"	14 1/4"	11 1/8"	LCD	3.5"	125	3	Straight Blade	5-15	10	USB Cable	Canada	7864N12	00000000

Accessories and Replacements for Viscosity Testers

	For Viscosity, cP	Pkg. Qty.
316 Stainless Steel


1 to 6,000,000	4	7864N13	000000000
60 to 320,000,000	6	7864N14	00000000

	For Viscosity, cP	Ht.	Wd.	Dp.
316 Stainless Steel


1 to 6,000,000	6 1/2"	2 3/8"	1 1/8"	7864N16	0000000

Temperature Probes

Add temperature probes to account for the impact of temperature on viscosity.

	Probe Tip Dia.	Temp. Range, ° F	Probe Cable Lg., ft.		Each
316 Stainless Steel Probe



	3"	1/8"	-75 to 550	3	7864N15	0000000

Scratch-Resistance Hardness Testers

Determine the relative hardness of resins, film, lacquer, and paint by testing their resistance to scratches by graphite pencils. The pencils are calibrated to specific lead grades for hardness. The lowest hardness value of the pencil that mars the material is the material’s relative hardness. Flatten the tip of the pencil lead with the included 400 grit sandpaper, then insert the pencil into the tester. As you push the tester over your material, the pencil is dragged across the surface at a constant pressure. These testers are often used in the development of synthetic resins. They meet ASTM D3363 for testing the hardness of coatings.

	Testers											Replacement Pencils
	Pencil Lead Grade	Lg.	Ht.	Wd.	Wt., g	Features	Includes	Material	Specs. Met		Each		Each
For Film, Lacquer, Paint, and Resin



		9B, 8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H	4"	2"	2"	750	Level	20 Pencils (1 of each grade) Pencil Sharpener Plastic Carrying Case Sandpaper	Steel	ASTM D3363	3004N11	0000000	3004N12	000000

Viscosity Testers

Also known as Zahn cups, these testers let you calculate viscosity based on the speed at which a liquid drains through a cup with a hole at the bottom. To determine viscosity, dip the cup in a liquid until it is completely filled, lift the cup out of the liquid, and time how many seconds it takes for the liquid to drain out of the hole in the bottom. Use the included formula to convert seconds to centistokes.

Cannot Be Sold to Canada—Testers cannot be sold to Canada due to import regulations.

	Viscosity Range, cSt	Lg.	Wd.	Dp.	Specs. Met	Cannot Be Sold To		Each
304 Stainless Steel



	Thin Oils and Lacquers	40 to 230	13 3/4"	1 3/8"	2 3/8"	ASTM D4212	Canada	8547T32	0000000


	Medium Oils and Mixed Paints	150 to 790	13 3/4"	1 3/8"	2 3/8"	ASTM D4212	Canada	8547T33	000000

Grind Gauges

Test how smoothly your paint, coatings, slurries, and other mixtures are blended. These gauges check for coarse particles and how they clump together, otherwise known as grind, which affect texture and application. With both a micron and Hegman scale, there’s no need for conversions. Gauges have two identical grooves to test samples side by side. Made of 440C stainless steel, they have excellent wear and abrasion resistance for repeated use with a wide variety of materials. They also resist corrosion.

Place your sample in the deep end of the groove and draw it evenly towards the shallow end with the scraper. To identify the sample’s rating, check where particles clump together on the scale.

Choose a broad scale range for thick samples, such as ceramic slurries. Choose a narrow scale range for extra precision with thin samples, such as printing ink. The broader the range, the more gradual the groove depth.

Microns—Microns (µm) are one millionth of a meter.

Hegman—A Hegman scale, also known as a National Standard scale, ranges from 8 to 0. The finer the grind, the lower the micron value, and the higher the Hegman value.

Grind Size Range	Graduations (Numeric Graduations)	No. of Grooves	Lg.	Wd.	Dp.	Material	Includes	Measurement Unit		Each
0 to 100 μm, 8 to 0 Hegman	10 μm (10 μm), 0.5 Hegman (1 Hegman)	2	6 5/8"	1 5/8"	1/2"	440C Stainless Steel	Scraper, Storage Case	Microns, Hegman	7547N11	0000000
0 to 15 μm, 8 to 6.8 Hegman	1.5 μm (3 μm), 0.15 Hegman (0.3 Hegman)	2	6 5/8"	1 5/8"	1/2"	440C Stainless Steel	Scraper, Storage Case	Microns, Hegman	7547N14	000000
0 to 25 μm, 8 to 6 Hegman	2.5 μm (5 μm), 0.25 Hegman (1 Hegman)	2	6 5/8"	1 5/8"	1/2"	440C Stainless Steel	Scraper, Storage Case	Microns, Hegman	7547N13	000000
0 to 50 μm, 8 to 4 Hegman	5 μm (10 μm), 0.5 Hegman (1 Hegman)	2	6 5/8"	1 5/8"	1/2"	440C Stainless Steel	Scraper, Storage Case	Microns, Hegman	7547N12	000000

Replacement Scrapers