Best Metric Hole Gauges in 2026

Quickly and easily size bolts, screws, nuts and twist drills

Features ruler marked with inches and millimeters

Gauge metric hex nuts and washers by holding under metric holes

29 Holes measurement: 29-hole sizes remain constant, providing precision accuracy; The drill sizes in both inches and decimal equivalents, equivalents range from 1/16 inch to 1/2 inch by 1/64 inch, come with clearly marked fractions and decimal for accurate measurement

Exquisite design: heavy gauge steel construction is machined and ground to close tolerances, it can quickly and conveniently identify drill bit diameter; With a hanging hole design for easy hanging, which provides convenience for your work

Durable material: well constructed of stainless steel, it is sturdy and durable, helps to gauge the drill bits quickly and easily when working with older, unmarked drill bits and bits that are too small to fit diameter markings, practical equipment in home tools box

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

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

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

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

★【What You Get】: In this thread pitch gauge kit, it include 51Pcs America SAE type, 52pcs metric and Inch type, 3pcs metric & america SAE type & British Whitworth, they are well packed in a plastic box, easy for carry and store.

★【High Quality】: All the thread pitch gauge are made of stainless steel, heat processed with chrome finish, high strength, good resilience, elegant appearance. Surface polished smooth, applying anti-rust oil to prevent rust.

★【Measuring Range】: 51pcs America SAE type measuring range is 4-84; 58pcs Metric & America SAE Type & British Whitworth Metric is 0.25-6.0mm, Imperial is 4G-62G US: 8, 10, 11, 14, 19, 28.

[Cut Wood Threads]: Use the Deadwood Crafted Tools Plastic Dowel Jigs Woodworking Thread Tap Die Kit to cut 1/2-inch external and internal threads for fasteners and holes; 8 thread per inch

[Premium Cutting]: Tapping tool set die and thread cutter screw hole ensures smooth, clean cuts for hard wood blocks and soft wood dowels for woodworking projects; 7/16-inch tap hole for 1/2-inch (1.2cm) dowel

[How to Use]: Use oil lubricant (not included) to soften wood and 7/16-inch drill bit; Align dowel to wood threading kit threader hole, press down and turn to create external threads; Included threaded insert drill tap set tool cuts threaded holes in wood blocks to connect threaded large dowels

Made of quality stainless steel and processed with chrome finish, it combines high strength, good resilience, elegant appearance. Not easy to rust and long lasting durability

The America SAE type thread pitch gauge has 51 pieces tablets.The metric and Inch and SAE type thread pitch gauge has 58 pieces tablets, 24 tablets of which are metric, 28 tablets are Inch and 6 tablets are America SAE

Well Made: The toothed edges are sharply defined and the numbers are stamped and easy to read

Quantity and size: there are 4 pieces car voltage gauges in the package, the input voltage is 12-24V, measuring range is DC 6-32V and accuracy is 0.1V, this digital display voltmeter is approx. 1.43 x 1.43 x 1.25 inches in dimension

LED display: with precise 3 bit LED digital display, this 12V voltmeter gauge is easy to read, real time monitoring of battery voltage, convenient for you to know the status of electric quantity in time, grasping the state of battery voltage between full charged and discharged of this DC voltmeter

Durable to use: the LED display voltmeter is made of copper and ABS plastic, which is waterproof and durable, safe and reliable to use; With reverse connection protection function, line will not be burnt, can accompany you for long time

"Parameter: there are 2 pieces car voltage gauges in the package, the input voltage is 12-24V, measuring range is DC 5-32V and accuracy is 0.1V, this digital display voltmeter is approx. 1.43 x 1.43 x 1.18 inches in dimension"

"Practical LED display: with precise 3 bit LED digital display, this 12V voltmeter gauge is easy to read, real time monitoring of battery voltage, convenient for you to know the status of electric quantity in time, grasping the state of battery voltage between full charged and discharged of this DC voltmeter"

"Reliable to use: the LED display voltmeter is made of copper and ABS plastic, which is waterproof and durable, safe and reliable to use; With reverse connection protection function, line will not be burnt"

Figures and increments both inch and metric are etched into surface

For measuring of slot width, gap hole and etc.

Gauge is made of stainless steel, durable

Inch / Metric Range 2" to 6" diameter

Measures bore to 10" deep

Analog bar display with adjustable rang and tolerance indicators

【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.

【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.

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

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.

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.

Welding Taper Gauge: 1-15mm (1/32 inch - 5/8 inch)

Made of stainless steel, durable and wear resistance, no worry about rusty and corrosion

Accurate figures and increments are etched into surface, clear mark line for easy and quick reading, will be not rub off

Best Performance - The Starrett Telescoping Gage is the perfect tool for determining the true size of holes, slots, and recesses up to 6" (150mm). This tool will become an indispensable tool in your arsenal.

Precision Ground Radius - Each gage is precision ground with a radius, providing two-point contact for maximum accuracy. This guarantees that the measurement you take is precise and consistent every time.

Durable Construction - The telescoping gage is made from the highest quality material ensuring that it will last through even the most rigorous use. It can handle any job you throw at it, making it a versatile tool for your workshop.

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

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

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

Working Principle - Double action handles are rigidly attached to the contact plungers and are automatically self-centering.

Function - Assist in quick checking of holes, slots and recess up to 6 inch deep.

Scope of Application - Telescopic spring piston in the hole (or groove), can conduct inner diameter detection, used with micrometer or caliper, with knurled locking device.

Dial Bore gauges are designed to measure the inside diameter of holes or bores. They can measure the interior diameter of a hole up to 10” from the surface. Bore gauges can also be used to measure threads or spline pitch diameters

This bore gauge has a measuring range between 2 and 6 inches.

Set comes with 11 stainless steel tipped anvils, 3 spacers (0.1, 0.05 and 0.02 inches) and a 2 inch extension.

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

T-hole gauges are made of high quality steel and are robust and durable

Spring with knurled locking knob and knurled fixing area

For obtaining the exact dimensions of holes and slots

【Tool steel, stainless steel】 It is made of tool steel and stainless steel, and after special processing, it can be used for a long time. It is widely used for measuring the inner hole size of various processing techniques.

【Non-slip handle】 The thickened frosted stainless steel handle is non-slip and more convenient for measurement and use. Measuring range: 2-6in, resolution: 0.001in, display range: 0-0.5in.

【Multiple specifications】 High-strength hardened probe, suitable for high-strength measurement. Multiple probes to meet different inner diameter measurements.

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

Range: 1.200-1.600" 30-40mm. Resolution: 0.00005" / 0.001mm. Accuracy: 0.00020"

Carbide measuring surfaces

Contact points are designed to allow measurments near the bottom of a blind hole