deflection checking instrument
Detailed Product Description
Major technique parameter:
(1) not-like 2nd apex 60 degrees conical surfaces to Morse awl's radial direction circle beat
(2) apex spool thread in the 100mm scope to guide rail's parallelism (level vertical direction)
(3) is measured components most large diameter 270mm;
(4) surveys length 300mm, 500mm, 1000mm, 1500mm.