US$ 17.95
and four rotary controls
Used to demonstrate rotational-to-linear motion conversion
Laboratory table clamp mounting rods to benches up to 2
Thirty-atom organic chemistry model set with 24 short and long bonds
Simple Machines Gear Rack Model Pack Size_12 and four rotary controlsRotation 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.