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Force Board Bench Type
(MC-1121) |
For demonstrating the principle of the parallelogram law of
forces and polygon of forces. A unit is a drawing board size
: 75 x 60cm fitted on two side pillars for standing. The
board is supplied complete with two pulleys (clamp
pattern) 3 x 50gm hangers and 12 slotted weight of 50gm,
reel of cotton thread and a ring, |
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