BAR AND GAUGE
To demonstrate the expansion on heating and contraction on cooling. Consist of a mild steel bar 110 x 13 mm. diameter fitted in the center with a support rod having a wooden handle, brass just slides length wise when cold, with a hole in one arm through which bar just passes when cold.
Category: Physics & Electronic Laboratory Apparatus
GEOMETRICAL MODELS WOODEN SOLID
A set of 16 or 21 plane and solid geometric shapes. The plain shapes include triangle, rectangle, square, circle, semi circle, figure with five sides, six sides, eight sides, right angle. Solid figures include triangle, rectangle, cylinder, square, cone, square base pyramid, triangle base pyramid, pentagon, hexagon, octagon, sphere and ellipse. Supplied in a polished wooden box.
Cast iron with levelling screws, with vertical and horizontal holes to accept 13 mm. diameter rods, each hole with a clamping screw. Overall length 240 mm. mass approx. 2.5 Kg.
Light alloy, with single hole to take rods up to 13 mm. diameter.
GEOMETRICAL INSTRUMENT BOX
Soft wood, contains one each of Divider, Protector, Set square 450 angle, Set square 600 angle, Compass, Rule, Board Cleaner. Each with a finger grip for convenient handling. Packed in a wooden box of size 400 x 240 x 75 mm. width x depth x height, fitted with brass fittings and a handle for carrying.