Double scale, available in both metricand inch scales, 0~30mm / 0~1.2inch, to meet different needs It can be used to measure for slotting and cutting purposes, and to connect slotting and tenons joints It has a wide ranges of applications, whether it is a table, cantilevers, sliding table, carvings table, or other tools for slotting, it can be used to adjust the required slotting size Small and exquisite appearance, fast and accurate, to use and carry Easy to use: able to internal and external and compare with other accessories to simplifies operations Made from aluminum alloy, with a sturdy structure, high hardness, and long service life, Manufacturer: Msioytog