Master Precision Level, 15" (380 mm), SLC Ground and graduated main vial of 10-second accuracy; one division equals 1/2 thousandth (0.0005) of an inch per foot, or 0.04 mm per meter Main vials have seven graduations on each side of the bubble Auxiliary level vial shows lateral position and assists in horizontal setting Level vials are positioned so breakage is reduced to a minimum Fool-proof adjustment to avoid tampering, once set Special alloy iron used to obtain freedom from thermal effects Castings are thoroughly seasoned and machined Reference surface is scraped Non-machined surfaces have a black wrinkle finish Insulation from handling by means of top plate of nonconductive material Specifications Width 1-5/8" EDP No. 66932 Note With Standard Letter of Certification. Country Of Origin United States
