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The two steel plates are placed vertically in which the linear guide bar are inserted. The linear guide bars are also inserted inside the holes of the bearing fixed in slides A, B and C. The straight edge is mounted on the slide A with the bolt. The gear holding mandrels are mounted on the slide B and C. Three vertical supports are fitted in the appropriate position. The square bar is placed in between the slide B and slide C in which the projector is mounted.

The two lead screws are attached with slide A, when the one knob is rotated the straight edge moves longitudinally and another knob is for the cross movement of slide A. The light source is placed in between the slide Band slide C.

Specifications:

Max dia of gear	100-200 dia mm
Involute profile checking	Spur gear
Max helix angle	Upto 300
Incorporated projector screen size	80mm dia
Projector magnification	5x
projector light source Transformer	6v 10w,
Halogen bulb	6v 10w
L.C for Lever dial gauge	0.01mm (Range 0-0.8mm)
L.C for  dial gauge	0.01mm (Range 0-10mm)
Max thickness of the gear	30mm
Concentric diameter checking	Spur and Helical Gears
Overall size	800x300x425mm
Weight	55Kg  (approx)