Consists  of a cast iron base fitted with three levelling screws, thoroughly aged and machined over which slides a metal carriage. Slide can be clamped at any position by means of clamping screw. A sliding carriage slides along a metal vertical pillar fitted on the horizontal carriage.  The microscope with rack and pinion is fitted on this vertical carriage and can be clamped in a vertical or horizontal position. Stage for placing objects for measurement is fitted with Perspex  sheet. Horizontal and vertical scales of brass steel. Achromatic lenses have been used. Horizontal  scale 0 to 18/20cm, Vertical  scale 0 to 16cm, 10x Eyepiece, FL 50 mm approx. Vernier reading 0.01 mm. Supplied in wooden case.