Siv zog ua ntej ntawm kev lag luam tsis tu ncua, peb siv zog ua kom zoo precision granite triangular square.Siv cov khoom zoo tshaj plaws Jinan dub granite ua cov khoom siv raw, qhov precision granite triangular square yog qhov zoo siv los xyuas peb qhov kev tswj hwm (xws li X, Y thiab Z axis) ntawm cov ntaub ntawv spectrum ntawm cov khoom siv.Kev ua haujlwm ntawm Granite Tri Square Ruler zoo ib yam li Granite Square Ruler.Nws tuaj yeem pab cov cuab yeej siv tshuab thiab tshuab tsim cov neeg siv los ua lub kaum sab xis tshuaj xyuas thiab sau rau ntawm qhov chaw / workpieces thiab ntsuas qhov perpendicular ntawm cov khoom.