1、8 IN 1 GAUGES: For YALE, for ARPOW, for WEISER, for MASTER, for WESLOCK, for SFIC E2, which can obtain accurate data of these specifications for easy processing, replication, and repair. 2、ACCURATE MEASUREMENT: The key gauge can provide highly accurate measurement results, and can accurately measure parameters such as length, width, depth, and shape of the key. 3、EASY TO USE: Key gauges are usually handheld or pocket sized and can be easily carried and used. When using a key gauge for measurement, simply insert the key into the corresponding slot in the gauge to obtain accurate measurement results. 4、DURABILITY: The key gauge is made of premium spring steel, which has durability and can withstand long term use and frequent measurements. 5、IMPROVING EFFICIENCY: The use of key gauges can quickly and accurately measure the size and shape of keys, eliminating the tedious process of manual measurement and improving work efficiency.