Best Inch Depth Gauges in 2026

Accurate measures tire tread depth gauge tool

Calibrated from 0 to 1 inch in 1/ 32 inch

Red range on bar: 0-3/32; Yellow Range on bar: 3/32 - 6/32; 5. Green Range on bar: 6/32-32/32

Range: 0 to 22" (with included 6 extension rods 1", 2", 3", 4", 5", 6") Resolution: 0.0005"

Super high precision electronic indicator 0-1" Travel, Resolution: .0005" / .01mm / 1/128 inch

Indicator Gauge conforms to AGD standard and Federal Accuracy specifications

Accurate Measurements: This Bore Gage Features A Dial Indicator With A Graduations Of 0.0005" And A Measuring Depth Of 9.5"

Extended Range: This 2-6" Bore Gage, With A Two-Point Contact System, Is Used For Measuring Hole Diameters And To Detect Geometry Abnormalities. The Carbide-Tipped Anvil Contact Points Provide Extended Wear & Improved Abrasion Resistance

Self-Centering: The Easily Adjustable Bore Gage Is Self-Centering For Fast And Accurate Measurements

✔ HIGH QUALITY -- PROND tire tread depth gauge made of durable plastic and stainless steel materials. Comes with a pocket clip, easy to carry.

✔ SAFE -- Tread depth gauge suitable for measuring the degree of wear of tire surfaces, it can let you regularly monitor tire tread levels of your car, make driving safer.

✔ CONVENIENT -- Reads in 32 nds. The markings are fairly crisp and easy to read, gives fast and accurate measurement to tread depth. Calibrated from 0 to 1 inch in 1/ 32 inch.

WIDE APERTURE: The Trend Digital Depth Gauge features a 2 23/64 inch wide aperture to span fence cheeks and bigger router base openings for a variety of woodworking projects.

ACCURATE DIGITAL READOUT: This depth gauge is accurate to 0.003 inch with readout registering in 0.002 inch increments, allowing for precision setting of rebates and grooves on router tables.

MAGNETIC FEET: The magnetic feet hold it to metal surfaces, freeing your hands for adjustments and setting up. The locking option can secure any measurements that needs to be transferred.

FUNCTIONS: TEST CYLINDER COMPRESSION --- This cylinder compression tester kit is used for testing pressure on gasoline engine cylinder quickly and accurately. The gauge readings assist to diagnose if there are following problems: valve sticking, carbon build-up, cracked cylinder head or defective main gasket, poorly seated or worn piston rings, burned or damaged piston.

APPLICATIONS: GASOLINE ENGINE CYLINDER --- Come with different sizes rotary and push on adapters, widely suitable for most types and depth spark plug well on gasoline petrol gas fuel engine cylinder, which is common in motorcycle, car, truck, lawn mower, ATV and so on. NOT FOR DIESEL ENGINE.

UNIVERSAL: INCLUDE 10 CONNECT ADAPTERS --- 13-in-1 engine tester gauge kit includes 1-piece spring buckle gauge; 5-pieces brass adapters M10, M12, M14, M16, M18 for wide applications; 2-pieces straight and angled push-on connectors for direct testing; 1-piece extra long 8 inches extension straight rod, 1-piece 12 inches M12 extension hose rod and 1-piece 16 inches extension hose for long reach testing. Come with extra 2-piece spark plug testers.

FUNCTIONS: TEST CYLINDER COMPRESSION --- This cylinder compression tester kit is used for testing pressure on gasoline engine cylinder quickly and accurately. The gauge readings assist to diagnose if there are following problems: valve sticking, carbon build-up, cracked cylinder head or defective main gasket, poorly seated or worn piston rings, burned or damaged piston.

APPLICATIONS: GASOLINE ENGINE CYLINDER --- Come with different sizes rotary and push on adapters, widely suitable for most types and depth spark plug well on gasoline petrol gas fuel engine cylinder, which is common in motorcycle, car, truck, lawn mower, ATV and so on. NOT FOR DIESEL ENGINE.

UNIVERSAL: INCLUDE 9 CONNECT ADAPTERS --- 10-in-1 engine tester gauge kit includes 1-piece spring buckle gauge; 5-pieces brass adapters M10, M12, M14, M16, M18 for wide applications; 2-pieces straight and angled connector for direct testing; extra long 8 inches extension tube and 16 inches extension hose for long reach testing.

Includes 1" and 2" interchangeable depth bars to extend the rod to 2", 3" or 4".

3-Reading functions: inch, metric, & fractional

Spring loaded movement for easy use

Inch / Metric Range 2" to 6" diameter

Measures bore to 10" deep

Analog bar display with adjustable rang and tolerance indicators

【Accurate Data】 The GemRed Depth Gauge applies Absolute Depth Sensor , to ensure the accuracy of data up to 0.1mm/0.004’’, resolution is 0.05mm/0.002’’. ☆Measure range:0~80mm (0~3 1/8" )

【Locking Function &Magnetic】 The Locking screw can help to lock the ruler to maintain the measurement. With free standing magnetic feet, vertical measurement of Height Gauge is more accurate.

【inches/millimeters】The measured values can also be converted between inches and millimeters to meet the user's various habits.

Range from 2" to 6". Accuracy: 0.001"

With Carbide tip on measuring plunger

Dial indicator includes jewel bearing, including ABS storage box

This easy-to-use depth and angle gage allows you to accurately measure and mark the outside, inside and sloped angles of a surface

The hardened steel base is grooved on both sides to deliver accurate angles; Permits easy setting of the protractor angle to 30, 45 and 60 degree on both sides

The rule can also be used as a depth gage for measuring small holes and slots

FUNCTIONS: TEST CYLINDER COMPRESSION --- This cylinder compression tester kit is used for testing pressure on gasoline engine cylinder quickly and accurately. The gauge readings assist to diagnose if there are following problems: valve sticking, carbon build-up, cracked cylinder head or defective main gasket, poorly seated or worn piston rings, burned or damaged piston.

APPLICATIONS: GASOLINE ENGINE CYLINDER --- Come with different sizes rotary and push on adapters, widely suitable for most types and depth spark plug well on gasoline petrol gas fuel engine cylinder, which is common in motorcycle, car, truck, lawn mower, ATV and so on. NOT FOR DIESEL ENGINE.

UNIVERSAL: INCLUDE 10 CONNECT ADAPTERS --- 12-in-1 engine tester gauge kit includes 1-piece spring buckle gauge; 5-pieces brass adapters M10, M12, M14, M16, M18 for wide applications; 2-pieces straight and angled push-on connectors for direct testing; 1-piece extra long 8 inches extension straight rod, 1-piece 12 inches M12 extension hose rod and 1-piece 16 inches extension hose for long reach testing. Come with extra 1-piece cylinder stethoscope.

Measuring Range: 0-1 inch or 0-25.4 mm

Resolution: .0005" / .01 mm

Base Size 2.75 inches by 0.30 inches; Steel probe Head Diameter: 0.080 inches

LCD Display: High-quality electronic depth gage features a large LCD screen which displays in inch/metric/fractions; the electronic display can be easily adjusted for zero setting; spring-loaded and hold measurement button for ease of use

Precision Measurements: Features a 0-16"/406mm range, a resolution of 0.0005"/0.01mm (fractions in 1/64" increments), and travel of 0-1"/25mm

Rod Extensions: Five rods with a diameter of 0.176" that can be connected to reach full capacity

【HIGH ACCURACY】Measurement range is 100-300F(-17~187C),Sensor mounting thread: NPT 1/ 8 ",Power: 12V DC, Max. 0.3A.

【SMARTER INTERFACE】The Digital Gauges include new technological features that make them easier to use. Two buttons on the faceplate deliver programmability for peak/recall, standard or metric center LED readout and sweeping LED needle, and user-selectable threshold warnings.

【EASIER TO MOUNT】Despite the larger display, Gauges are contained in a standard 2-1/16th-inch (52mm) diameter housing for mounting in a standard gauge pod. Thanks to an advanced single board design, X-Series Gauges have an incredibly slim overall depth of under 18.8mm This shallow cup depth allows Gauges to be mounted practically anywhere.

Range: 0-150 mm / 0-6'', Accuracy: ±0.003 mm, Base: 4”; No. of rods: 6

Interchangeable rods provide a wide measuring range

High accuracy interchangeable rods enable that reading does not have to be reset when changing rods

Accurate Measurements: The bore gage features an electronic indicator with resolution of 0.00005"/.001mm and measuring depth of 9 inches

Durable Construction: This electronic indicator provides both inch and metric readings; two-point contact system is used to detect geometry problems such as ovality and taper; carbide-tipped contact points provide extended wear and improved abrasion resistance

The easily adjustable bore gage is self-centering and includes a 2-inch contact extension holder

Measures Accurately - The Base is cut out on one side, adjacent to the rule, permitting easier readings and more accurate measurements. The 6" hook rule permits easier readings from the edge of a workplace to the edges of the slots, and shoulders.

Safe and Smooth Adjustment - The Gage can be smoothly adjusted to the required measurement and then locked into position by a knurled nut. Rules are either 610N (6 inch) or 635N (150mm) models.

Best Performance - These gages consists of a nicely finished, hardened steel head and an accurate, machine divided, tempered steel rule.

Heavy Duty - The Micrometer Depth Gage comes with a hardened stainless steel body and slide for long life with a hardened base 3-15/16" (99mm) long, but optional base extensions of 7" and 12" (175 and 300mm) are available.

Turns Off Automatically - It has a manual ON/OFF with a built in automatic OFF after 15 minutes of nonuse. This will conserve battery life and ensures the tool is ready to use. It has inch/millimeter conversion and zeroes at any position.

Easy to Read - The clear, easily-read numbers are properly sized for the tool to ensure easy handling and better readability. Spacing between holes is 2-3/4" (70mm) and the fine adjustment thumb roll is for taking precision measurements.

Application – This kit universal fits for all diesel engines. Range: 1.00 inch. Graduations: .001 inch. Reading: 0-100.

Material – It is made of special high quality steel and aluminum alloy, hard coated crystal dial face for scratch & corrosion resistance, which reduces the weight of the product and has strong corrosion resistance, wear resistance and durability. Minimize measurement errors and make the measurement results more accurate.

Quick measurement steps – Cylinder sleeve height using pointed contact; Counter bore depth using flat end contact; Top dead center; Piston-to-deck height; Valve protrusion; Easy reading around entire bore.

Dual Dial Indicator Inch / Metric 3 scales Inch / Fractional Inch / mm

Fine Adjustment Knob for easy calibration

Range: 0-2" Resolution: 0.001"/0.01mm

Digital accuracy radius gauge: Can both measure Outer & Inner Radius of arcs & Depth and Step measurement. With Digital dial indicator function,Measuring Range: length displacement 0-13mm (0 ~ 0.5 inch); Resolution: 0.005mm (0.00005 inch); Radius Range: 5-700mm (0.2 ~ 27.5 inch)

Large High Definition Display: the readings are clear at a glance, shown Inner and outer diameter ,Measuring Jaws , Radius R value, Metric and Imperial Units ,length,Arc chord height . With data connection port can be connected to the computer to output data, more convenient and quick.

Inch/Metric Conversion: Switchable between mm and inch, Suitable for All Kinds of Measurement, with simple operation, fast reading, small size, convenient reading, hand-held Measurement characteristics.

Accurate Measurements: Used for accurately setting any bore gage up to 6" in diameter to an accuracy of 0.0001"; comes with a base anvil of 2.750" x 0.80" and 2 adjustable anvils of 2.375" x 0.375"

Bore Gage Capacity: This bore gage master has an internal capacity of 6", a depth capacity of 1", and a centralizer capacity width of 2.625"

Fast Adjustments: Features a quick-release holder for fast adjustment; this bore gage setting master can also be used of external setting, depending on the application (external mics, snap gages, caliper gages)

7piece Fillet Weld Set Gage

Rl Gauge

Both Metric & Inch

1.8 to 4” range, 6” probe depth, 0.00005”/0.001 mm resolution, with + or - 0.00012” accuracy

LCD display for easy measurement reading

Conforms to IP 53 for dust and water protection