A planed board 600 x 75 mm hinged to the base at one end and provided with a pulley for the force at other end either with glass top or sunmica top. The upper board can be set at any angle by clamping the wing nut. Complete with graduated aluminium arc and iron N. P.roller and aluminium pan with thread for handing.glass top pulley, pan, roller, 50cm or 60cm long General
