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
Pulley - Force Table, Low Friction, Heavy Duty Metal Clamp Attaches Securely To Table Tops From 10 To 24 mm Thick And Pulley Runs Smoothly On Ball Bearing.
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