The vertical carriage slides on a brass pillar. In the vertical and horizontal at carriages a locking arrangement is provided to arrest coarse motion when slow motion screw is used. By successively locking and unlocking, motion in the total traverse can be provided by the slow motion screw.
Travel : horizontal travel 170mm, vertical travel 110mm
Least Count : 0.01mm
Working distance : 50mm
Eyepiece Ramsden : 8x
Reticle : 90° cross on glass