Best Metric Hole Gauges in 2026

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.

Individually Ordered - You can order the handles in any size you need, making it easy to find the perfect telescoping gage for your needs. Whether you need a Handles can be individually ordered. Handles longer than 12" (300mm) are available on special order. We have you covered.

Durable Construction - The telescoping gage with case is made of hardened steel, 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 plungers are easily locked at any desired setting.

Rounded ends - no ragged edges make stock easier to work with

Made of the finest tempered steel

Each piece marked every 6" with thickness and in individual envelope

Accurate Measurements - Our Tempered Steel Thickness Gage features a high-quality construction that provides accurate measurements every time. With a clear display, it's easy to get an accurate reading no matter what you're working on.

Easy to Use - Our gages have rounded ends which means no ragged edges, making them easier to handle and use. It is marked every 6" or 150mm with the thickness and 3/16" hole punched in the end for hanging.

Durable Construction - Starrett's Thickness Gage is built to last. It can handle even the most strenuous jobs. The durable construction will ensure years of use and the easy to read measurements make this tool perfect for anyone.

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.

Measures Accurately - The Small Hole Gages are ideal for accurately measuring small holes, slots, grooves, and recesses. This makes it perfect for general work where more accurate measurement is required.

Safe and Smooth Adjustment - It is designed with a smooth and sensitive adjustment that makes it easy to get the perfect fit. The adjustment range is also restricted by a safety stop, preventing breakage and damage.

Best Performance - These gages have a precision ground radius on each gage that provides two-point contact for maximum accuracy and a hardened-ball measuring the surface with two-point contact.

Accurate Measurements - Our Tempered Steel Thickness Gage features a high-quality construction that provides accurate measurements every time. With a clear display, it's easy to get an accurate reading no matter what you're working on.

Easy to Use - Our gages have rounded ends which means no ragged edges, making them easier to handle and work with. Marked every 6" with the thickness and 3/16" hole punched in the end for hanging.

Durable Construction - Starrett's Thickness Gage is built to last. It can handle even the most strenuous jobs. The durable construction will ensure years of use and the easy to read measurements make this tool perfect for anyone.

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.

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.