Best Bore Gage Hole 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

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

【Range】5/16" - 6" (8mm to 150mm), Stainless Steel Construction.

【Using】Gage expands in a hole to be measured , locks in place and then removed to determine final hole size using a micrometer or calipers.

【Package】Includes 6 sets, with vinyl case

[MATERIAL]: It is made of carbon steel with chrome plating on the surface

[PACKAGE INCLUDE]: Range: 5/16" - 6" (8mm to 150mm),6PCS in total(1 gage: 5/16 - 1/2" range x 4.20" overall; 1 gage: 1/2 - 3/4" range x 4.40" overall; 1 gage: 3/4 - 1-1/4" range x 4.40" overall; 1 gage: 1-1/4 - 2-1/8" range x 5.85" overall; 1 gage: 2-1/8 - 3-1/2" range x 5.85" overall; 1 gage: 3-1/2 - 6" range x 5.85" overall); Ethylene plastic bag packaging

[OPERATION METHOD]: Use the gauge to expand in the hole to be measured, lock it in place, and then take it down, and measure with micrometer or caliper to determine the final hole size

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.

TOOL LENGTH: Approx. 7.5cm/2.95", 7.8cm/3.07", 8.8cm/3.46", 9.2cm/3.62"

GAUGE RANGE: 1/8"-1/5",1/5"-3/10",3/10"-2/5",2/5"-1/2"

EXTRA LONG FOR GAUGING DEEP AND SHALLOW HOLES,SLOTS AND SIMILAR WORK

4 pc Toolmaker's Inspection Set - includes 1 x 6pc Micrometer set; 1 x 6 Pcs Telescoping Gauge Set; 1 x 6 pc Telescoping Gage Set and 1 x 4 pc Small Hole Gauge Set

Features of the Micrometer Set: Measuring range of each Mic: 0 - 1'', 1 - 2'', 2 - 3'', 3 - 4'', 4 - 5'', and 5 - 6''; Hardened and ground spindle with carbide anvil ensured durability and accuracy; Super Hard Carbide Tipped; Complete with calibration standards and wrenches; Ratchet handle for precise application of force; Vernier Graduations: 0.0001''; Mitutoyo style Frame -- Solid Casting frame

Features of the Bore Gauge Set: Range: 2-6'' X 0.0005'', Stem Length: 6''; Chrome plated handle; Includes extension holder & washers; Self-centering; Easily adjustable

Spring loaded with locking knurled knob. Range: 5/16" - 6" (8mm to 150mm)

Stainless Steel Construction, Titanium coating finish

Rigid handle and double action design (self-centering) for quick checking of inside measurements

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

Super Precision Deep Measuring Bore Gauge

Accuracy: 0.0005" with Crisp Precision Graduations

✅ 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

Accurate figures and increments are etched into surface, easy to read

Both Metric and Stadard reading | Welding taper gauge: 1-15mm (1/64-5/8 inch)

Polished, bright and clean without burr, rust laser engraved line and will not rub off

High Precision and Accuracy - Pin Gages are used to gage bored features. It is especially useful for gaging the straightness of a relatively deep bore. They are used to test hole size and its geometry.

Easy to Use - Each pin is centerless lapped and is clearly etched with the stated size. All Starrett pin gages are manufactured to a 0.0002" tolerance and offered in 0.001" increments, it comes with an inspection certificate with every set.

Durable Construction - Sets are supplied in rugged, high impact protective cases with each space marked for the appropriate gage. It is color coded, fully adjustable Go/No-Go gage handle furnished with each set.

[MATERIAL]: It is made of carbon steel with chrome plating on the surface

[PACKAGE INCLUDE]: Range: 5/16" - 6" (8mm to 150mm),6PCS in total(1 gage: 5/16 - 1/2" range x 4.20" overall; 1 gage: 1/2 - 3/4" range x 4.40" overall; 1 gage: 3/4 - 1-1/4" range x 4.40" overall; 1 gage: 1-1/4 - 2-1/8" range x 5.85" overall; 1 gage: 2-1/8 - 3-1/2" range x 5.85" overall; 1 gage: 3-1/2 - 6" range x 5.85" overall); Ethylene plastic bag packaging

[OPERATION METHOD]: Use the gauge to expand in the hole to be measured, lock it in place, and then take it down, and measure with micrometer or caliper to determine the final hole size

Measuring Range: 2-6"

Bore Depth: 6"

Contact Points: 2

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.

Spring loaded with locking knurled knob. Range: 5/16 - 6 (8mm to 150mm)

Stainless Steel Construction, Titanium coating finish

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

Measuring Range: 1.4-6"

Bore Depth: 6"

Contact Points: 2

Spring loaded with locking knurled knob. Range: 5/16 - 6 (8mm to 150mm)

Stainless Steel Construction, Titanium coating finish

Contact points are hardened tool steel and precision ground in the end measuring radius

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

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).

Measuring Range: 0.7-1.5"

Bore Depth: 5"

Contact Points: 2

Size: Range - 5/16-6 inch (8mm to 150mm)

Material: Contact points are hardened tool steel and precision ground in the end measuring radius

Design: Rigid handle and double action design (self-centering) for quick checking of inside measurements

Dial bore gauge with a measuring range of 2"-6" and a graduations of 0.001".

Self-Centering extender bore gauge for accurate and reliable cylinder bore measurements.

Two-point contact system to measure hole diameters and detect geometry abnormalities.