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Ball and Ring

11737

Demonstrates expansion of metals with heat.
Demonstrates expansion of metals with heat.

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$13.50 Each

Bar and Gauge

14699

Illustrates linear and spherical expansion by heating and contraction by cooling. Mild steel bar 110x12.5mm, length x diameter. Mounted on a rod with wooden handle and a brass gauge 150x38mm with a cutout mounted on a separate wooden handle which just admits the bar lengthways and a hole into which the bar passes endways when cold.
Illustrates linear and spherical expansion by heating and contraction by cooling. Mild steel bar 110x12.5mm, length x diameter. Mounted on a rod with wooden handle and a brass gauge 150x38mm with a cutout mounted on a separate wooden handle which just admits the bar lengthways and a hole into which the bar passes endways when cold.

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$10.95 Each

Convection Tube

15880

To demonstrate convection of heat in liquids. Rectangular glass tube 200 x 150mm sides and 22mm in diameter with a built in funnel for easy pouring in of the liquid. Made from Borosilicate Glass. Instructions included.
To demonstrate convection of heat in liquids. Rectangular glass tube 200 x 150mm sides and 22mm in diameter with a built in funnel for easy pouring in of the liquid. Made from Borosilicate Glass. Instructions included.

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$14.95 Each

Friction Blocks and Surface Set

15878

For introducing the concept that friction depends on the nature and smoothness of materials. The kit consists of three wooden blocks, L x W, 100mm x 70mm, with hooks. One with a highly polished side, second with a sandpaper side and third with an aluminum side. Complete with a polished wooden base about, L x W, 355mm x 70mm. Instructions included.
For introducing the concept that friction depends on the nature and smoothness of materials. The kit consists of three wooden blocks, L x W, 100mm x 70mm, with hooks. One with a highly polished side, second with a sandpaper side and third with an aluminum side. Complete with a polished wooden base about, L x W, 355mm x 70mm. Instructions included.

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$11.50 Each

Gas Convection Apparatus

14698

Metal construction. With sliding plate glass front. Two glass chimneys. Candle holder is mounted in the box.
Metal construction. With sliding plate glass front. Two glass chimneys. Candle holder is mounted in the box.

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$24.50 Each

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