Main technical indicators
(1) to measure surface parallel to the base surface and the measurement of surface B, perpendicular to the datum line cursor "0" and the main dial "0" line contact ratio greater than 3 , vernier scale two endpoints and the main scale two 11°line not coincidence degree is not more than 5 ; Conversely, tighten the screw to make the main lines to dial 0°and the cursor "0" after alignment, A measurement of surface and base level parallelism is not greater than 0.01 mm, B measured surface and the datum of verticality is not greater than 0.01 mm
(2) In the fixed state, the indication error of the adjustable Angle gauge is not greater than±10