Rectangular Block - Glass, Made from imported optical glass with optically worked surfaces, All angles accurately worked with edges slightly bevelled and glass free from bubbles, Size 100 x 60 x 18 mm
Force Board Kit, Compact & Low Maintenance. The Back Board Is Hard-Wearing With A Printed Grid And Is Bench-Standing. Detachable Feet For Easy Storage Ball, Provides The Teacher With A Simple Solution To Demonstrate The Principles Of The Parallelogram And Polygon Of Forces.
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