Comprising a wooden base board.

1.6mx140mm with a 1.5m scale divided in millimeters plus six sliding mounted metallic bases 100x50mm each with engraved line, brass pillars with screw for locking.

1 240V white lamp with lamphouse.
1 Metal object white screen 75mm dia with gauge.
1 Metal object white receiving screen 100x75mm.
1 Needle mounted in rod 6mm.
1 Plane mirror 100x75mm.

All the accessories mounted on a 6mm brass rod which fits in the stand giving an optical height approx.
125mm above the base board.