Best Cylinder Bore Gauges in 2026

Range 0.7" to 6" diameter, Measures bore to 10" deep

Super Precision Deep Measuring Bore Gauge

Accuracy: 0.0005" with Crisp Precision Graduations

Super Precision Deep Bore Gauge

Measures bore to 10" deep, Range 2" to 6" diameter

0.0005" precision graduations

Fits all diesel engines

Range: 1.00"

Graduation: .001"

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

[Size]: diameter range: 2.000"-6.000"; graduation: 0.0005"; depth: 6"; 12 PCS anvils: 1PC 2",1PC 2.2",1PC 2.4",1PC 2.6",1PC 2.8",1PC 3",1PC 3.2",1PC 3.4",1PC 3.6",1PC 3.8",2PCS 4"

[Industrial Professional High Precision Gage]: Bore diameter measurement as deep as 10" enables users to measure the out-of-roundness and taper of cylinders without removing pistons -- critical wear area of the cylinder can be reached with this gauge.

[Packing]: Includes all the necessary spacers, interchangeable extensions and ABS storage case

Gauge Set Comes In It's Own Carrying Case

Easy To Use/ Easy To Read

Professional Quality

【Multifunctiolan Digital Dial Bore Gauge Set】Neoteck digital bore gauge set includes 1*0.5 inch Digital Indicator; 1*a set of measuring accessories; 1*Measuring rod; 12*Different Specifications of Gauge：75mm、70mm、65mm、60mm、55mm、50mm、45mm、40mm、35mm、30mm、25mm、20mm、10mm from bottom to limit metal ring, 1* Storage Case, which if ideal for Deep Engine Cylinder Measurement

【Accurate Digital Indicator】This digital indicator bore gage set features a digital indicator with diameter range: 0 ~ 12.7 MM (0 ~ 0.5 inch); Resolution: 0.01 MM (0.0005 inch). Use After Zero Setting - Before measuring, be sure to adjust the pointer of the dial indicator to the ‘’0’’ setting and select the measuring head of the appropriate size for measurement

【Precision Digital Bore Gauge】Bore Gauge Measuring diameter range:50mm-160mm(2-6 inch ), Measures deep:150mm (5.9 inch ), Accuracy:0.01MM(0.0003 inch). Super Precision Deep Measuring Bore Gauge - Two-point contact is used to detect geometric diameter measurement problems such as ovality and taper.

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

With Carbide tip on measuring plunger

Dial indicator includes jewel bearing, including ABS storage box

Range 2.000"-6.000" diameter, .0005" graduations, 6" depth

For quick transferable accurate inside measurements

Insulated Grip - Carbide Anvils - Tool weight 6.1 lbs

Size：Range from 2" to 6"（50mm to 160mm）；bore to 150mm (5.9") deep; Accuracy 0.01MM (0.0003")；12 PCS anvils: 1 x 2",1 x 2.2",1 x 2.4",1 x 2.6",1 x 2.8",1 x 3",1 x 3.2",1 x 3.4",1 x 3.6",1 x 3.8",2 x 4".

Industrial Professional High Precision Gage：Bore measurement up to 10" deep enables users to measure cylinder out-of-roundness without removing the piston, for mechanic use.

Accurate and Effective：With Carbide tip on measuring plunger，Two-point contact is used to detect geometric diameter measurement problems such as ovality and taper.making repairs more efficient and hassle-free.

For Measuring Different Diameters - Range 50MM(1.97") to 160MM(6.23") diameter, Measures bore to 150mm (5.9") deep, Accuracy 0.01MM(0.0003")

Super Precision Deep Measuring Bore Gauge - Two-point contact is used to detect geometric diameter measurement problems such as ovality and taper

Professional Quality - Self-centering measuring extended heads, chrome plated handle and good quality ABS storage case

✅ ACCURATE & PRECISE: This dial bore gauge is primarily used by machinists to precisely measure the inner diameter of bores in motor engines. When measuring cuts or hole sizes, a dial bore gauge's speed and accuracy can save a lot of time

✅ MEASURING RANGE: With this dial gauge, you can easily and accurately measure cylinder bores for taper. They have a measuring range of 2-6m and 0.001m and are equipped with a self-centering guiding protective bridge for dependable and repeated use

✅ WELL-CONSTRUCTED ENGINE TOOL: A dial bore gauge that is built to be irreplaceably reliable and precise, allowing for more efficient and trouble-free repairs. This premium bore gauge is built to last

Measuring Range: 2-6"

Bore Depth: 6"

Contact Points: 2

SPECIFICATION Name:Industrial Tools Dial Bore Gauge Set Material: Metal Measure range:50-160mm Accuracy: 0.01 Weight:1211g

THE BORE GAUGES The bore gauges are used to measure internal sizes of work pieces by comparative method

GOOD GUIDING PROTECTIVE BRIDGE These series bore gauges are equipped with a good guiding protective bridge which can be self-centering exactly and reliably

High Precision: 52-646-400-0 dial indicator ，With a graduations of 0.0005"dial aperture gauge,Has a measurement range of 1.4 to 6 " Measuring depth of 9.5".

Scope of application:The dial bore gauge group is used to measure deeper cylinders, pipes, holes, etc. Which can be used to measure the aperture and detect geometric abnormalities, such as ovality and taper; It can be used for a variety of inspection and calibration purposes in automotive, manufacturing and other industries.

Advantages: Two-point contact system is used for measuring hole diameters and also to detect geometry abnormalities such as ovality and taper. The easily adjustable aperture gauge of the tool is self centering and used for fast, accurate and high-precision measurement. Self-centering meters come with insulated handles and smooth chrome-plated handles. The extension bracket is attached to the anvil base to extend the measuring length.

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.

Measuring Range: 1.4-6"

Bore Depth: 6"

Contact Points: 2

This dial bore gauge set are equipped with a good guiding protective bridge which can be self-centering exactly and reliably

The moveable anvil on one side and an interchangeable on another side , which serves for setting the bore diameters

This dial indicator with magnetic base and point precision inspection set is measuring range is 50-160mm.Easy to measure, and with high accuracy, which is 0.01

0.7''-1.5'' precision bore gage set;Range: 0.7-1.5";Bore Depth: 5";Graduation: .0005"

Sizes:1.4'',1.3'',1.2'',1.1'',1.0'',.9'',.8'',.7'';Stainless steel ball contact point for durability

8 pc Anvils (1 anvil installed in the bore gage probe and 7 pc in case slot);Dial face size: 2-1/4''

Valuable Application -- Professional Cylinder Dial Bore Gage great for hobby machinists as well as mechanics, it is commonly used to measure many kind of automotive’s parts or cylinders and easily check for ovality or out of roundness. It can measure the interior diameter of a hole at any depth (within its reach), while internal micrometers can only measure to the depth of their contacts.

Valuable Application -- Professional Cylinder Dial Bore Gage great for hobby machinists as well as mechanics, it is commonly used to measure many kind of automotive’s parts or cylinders and easily check for ovality or out of roundness. It can measure the interior diameter of a hole at any depth (within its reach), while internal micrometers can only measure to the depth of their contacts.

Technical Features -- Designed 2”-6” Measuring Range, 0.0005” Graduation, 9.5” Measuring Depth. Come with 2″ Contact Extension, 10 x Anvils (, 2.2", 2.4", 2.6", 2.8", 3", 3.2", 3.4", 3.6", 3.8", 4" ), 3 x different size Washers (0.1”, 0.05, 0.02”)Complete set -- The whole set include 1 x Dial Indicator, 1 x Chrome Plated Handle, 1 x Contact Extension, 3 x Washers, 10 x different size Anvils, all parts are collected in a fitted case

Precise Measurement: The measuring range of cylinder dial bore gauge is 2"-6", the accuracy is 0.001"

High Accuracy Industrial Measurement: Users can measure cylinder out-of-roundness and taper without removing the piston with bore measurements up to 10" deep - this diameter gauge can reach critical wear areas of the cylinder

Sturdy and Wear-Resistant: The engine cylinder measuring tool is made of stainless steel, the measuring plunger contains a carbide tip, and the dial contains gem bearings, which effectively improves the durability of the cylinder inner diameter dial indicator

This diesel compression tester kit comes complete with adapters for both direct and indirect diesel injected engines

It checks diesel engine compression under cranking conditions and comes with small profile, quick coupling adapters for speed and security

The built-in pressure relief valve enables repeat tests without dismantling

Absolute Encoder Technology digital indicator w/ IP54 protection

Measure in Inch or Metric with Auto Conversion - Range 1.4" - 6" or 36mm - 150mm

Resolution: 0.00005” / 0.001mm Accuracy: 0.0003” / 0.008mm Repeatability: 0.00005” / 0.001mm

The telescoping gage set is stainless steel construction, titanium coating finish.Double action rigid handle with self centering feature for quick checking of holes, slots and recess up to 6" deep.

The contact point is hardened tool steel and is fine ground within the final measuring radius.

The spring is equipped with a knurled locking knob and a knurled fixing area. Range: 5/16" - 6" (8mm to 150mm).

Great Compatibility — Perfectly fit for all diesel engines. Pointed contact for cylinder sleeve height. Flat end contact for counterbore depth. Professional measurement tools to ensure the accuracy of your work.

Easy Reading — Range: 0-1"; Graduations: 0.001". Reading: 0-100. Includes 4374 – Dial Indicator, 4375 – Base, 4230 – Flat Contact, 4378 – Pointed Contact, Hex Wrench and Carrying Case.

Perfect Design — The rotatable bezel with clamp for easy zero set. The interchangeable markers provide reference points for all your measurements. The limit markers can be moved without interfering with the clamp. Lug back with 1/4 hole.

Measuring Range: 0.7-1.5"

Bore Depth: 5"

Contact Points: 2

DESIGNED FOR: The bore gauges are used to measure internal dimensions of work pieces by comparative method, allowing for more efficient and trouble-free repairs. Made of quality metal material, this dial bore gauge is durable to use.

50-160MM MEASURE RANGE: These series bore gauges are equipped with a good guiding protective bridge which can be self-centering exactly and reliably, and measuring range is 50-160mm. Easy to measure, and with high accuracy, which is 0.01.

GOOD GUIDING PROTECTIVE BRIDGE: These series bore gauges are equipped with a good guiding protective bridge which can be self-centering exactly and reliably, for fast and accurate measurements.

Textured Design: This folding pad eye is of reliable performance and heavy duty design, contributing to ultimate protection from rust and will give a pristine look to any boat.

Flawless Polishing: Using fine grinding mirror polishing, which has wonderful precision, brightness and flatness. Maximum rust resistance and stability even in marine environments.

Stably Durable: Our 316 stainless steel folding pad eye remains durable even being exposed to saline water environment for a long time, therefore you can expect a lasting service with confidence.

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