Telescoping Bore Gauge Set | 8–150mm (5/16–6”) Inside Measuring T-Gauge Set for Engine Building

Perfect for engine builders and machinists, this high-precision telescoping bore gauge set is used to measure internal diameters, cylinder bores, and bearing housings accurately and easily.

Each T-gauge features a spring-loaded telescoping head that expands inside the bore. Once you’ve got a snug fit, lock it down with the knurled knob, remove the gauge, and measure the exact diameter with an outside micrometer or caliper.

Ideal for checking cylinder wear, bearing clearance, or machining accuracy, this set is a must-have companion to your micrometers and dial bore gauge setup.

⚙️ Features

• Measuring range: 8–150mm (5/16" to 6")

• 7-piece telescoping gauge set with fitted case

• Smooth telescopic rods with precise curvature for accurate measurements

• Knurled locking handles for secure operation

• Spring-loaded plungers for consistent measuring pressure

• Made from durable carbon steel for long life and repeatable accuracy

🧰 Why It Belongs in Your Toolbox

• Perfect for measuring bores, housings, and bearing journals

• Great companion tool to outside micrometers

• Used for engine blueprinting, machining, and precision measurement

• Quick, accurate, and reliable for both professional and DIY engine builders

Measure it right the first time — because precision is horsepower.