Comprising
inclined wood plane 600 x 100 x 20mm, with 22mm diameter pulley hinged to
wood base, 450 x 100 x 20mm. Linear scale fixed to edge of plane and
vertical linear and 0 to 45° angular scale fixed to base with clamp.
Complete with one each wood block 200 x 75mm and 100 x 75mm, steel block
100 x 75mm. scale pan 75mm diameter, cord and hooks.