Product Name: Mg edge ruler 

 Synonyms: edge ruler, magnesium aluminum blade size, lightweight magnesium aluminum knife-edge ruler, magnesium aluminum knife-edge ruler 

 Mg-Al-foot blade material: aluminum alloy with super (aircraft aluminum frame) 

 Physical properties of Mg-Al-foot knife-edge: 47kg/mm2 

 Mg-Al-foot blade elongation: 17% 

 Mg-Al-foot curved knife-edge service point: 110kg/mm2 

 Edge strength of Mg-Al-foot Vickers: HV80 

 The use of Mg-Al-foot knife-edge: detection of flat, flat feet, the machine table, rails and precision of the workpiece flatness, straightness. 

 Mg-Al-foot blade size (mm): 500,600,750,1000,1200,1500,2000,2500,3000,4000 

 (Greater than the above specifications can be customized)