Comprising a wooden base board 1.6
m x 140 mm with a 1.5 m scale divided in millimeters plus six sliding bases
100 x 50 mm each with engraved index line metal pillar and locking screw.
The following accessories are:- 1 lamp house with a white 240v 15 watts
lamp, 1- white metal object screen 75mm diameter with gauze, 1- holder for
lenses 38mm diameter, 1- white metal receiving screen 100 x 75mm with slot
for squared paper screen on the reverse, 1- object needle mounted in 6mm
brass rod, 1- plane mirror in a metal frame 10 x 75mm. each of the
accessories is mounted on a 6mm rod which fits into the stands giving an
optical height approximately 125 mm above the baseboard.
