Simple Machines Gear Rack Model Pack Size_12 Two rectangular slots accept square

Two rectangular slots accept square or round rods up to 16 mm in this aluminum alloy multipurpose clamp holder

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Two pith balls suspended on unspun silk from a brass pillar

Used to demonstrate rotational-to-linear motion conversion

Wall-mountable beech wood draining rack measures 20 x 20 inches and holds up to 90 pieces of labware inverted for post-wash drying in chemistry labs

Simple Machines Gear Rack Model Pack Size_12 Two rectangular slots accept squareRotation to linear gear rack simple machine model converting circular gear motion into straight line rack travel, demonstrating the mechanism behind crankshaft pistons and steering racks.