Description

Two pith balls suspended on unspun silk from a brass pillar

Used to demonstrate rotational-to-linear motion conversion

and four rotary controls

Twenty-nine labeled features across outer

Thirty-atom organic chemistry model set with 24 short and long bonds

Simple Machines Gear Rack Model Pack Size_12 Two pith balls suspended onRotation 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.

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Simple Machines Gear Rack Model Pack Size_12 Two pith balls suspended on

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