Features 【Accurate Measurement】 Equipped with four types of radiometers in different shapes and sizes, this radius gauge caters to various measurement needs. It enables quick and accurate measurement, allowing you to check the size of legs effectively. The measuring range includes R0.3-1.5 / R1-6.5 / R7-14.5 / R15-25. 【Versatile and Practical】 Each leaf of the thread gauge metric is clearly marked, making it easy to identify the required size. With its ingenuity design, this tool can be used to check both convex and concave surfaces, providing versatility for different projects. 【Durable and Rust-Resistant】 Crafted with exquisite craftsmanship, this feeler gauges metric is made of high-quality stainless steel, ensuring durability and resistance to rust. It can withstand frequent use and maintain its accuracy over time. 【Convenient and Efficient】 The angles on the thread cutting tool can be checked on the V slots in the gauge, making it particularly useful for checking tool angles while cutting threads in metal turning lathes. The thickness gauge helps improve efficiency and accuracy in thread cutting operations. 【Perfect Choice】 Whether you are a machinist, engineer, or DIY enthusiast, this measurement tool set is a must-have tool in your workshop. It allows you to achieve precise measurements and ensures the correct determination of thread sizes, making it an indispensable tool for professionals. Features: Made of stainless steel, this radius gauge is durable and resistant to rust.This radius gauge has two types of leaves so it can check both convex and concave surfaces.Each leaf is clearly marked, convenient to identify which leaf you need.There are four radium gauges in different shapes and sizes to meet you various need. Very useful gauge for tool & die makers, machinists, and many other worker to check the radius of tools. Specification: Material: Stainless steel Measuring Range: R0.3-1.5/ R1-6.5/ R7-14.5/ R15-25Weight: 270g / 9.5oz(approx.) Package list: 4 * Radius Gauges Package List