Size: 750 mm 600 mm As per I.S.I Specification made of best seasoned Fir wood with hard wood battens at the back, having slots for brass screws and washer, nuts fort clamping provided with brass circular disc, The corners. Of the board are protected with metal strips, Complete with all accessories , i.e. Survey of India sight vane, heavy full brass sprit level, heavy brass plumb bob. Heavy brass plumbing fork, all \made of brass aluminum magnetic compass and a highly polished seasoned teakwood stand, Packed in water proof canvas cover.
