Simple Machines Gear Rack Model Pack Size_12 Twenty-nine labeled features across outer

Twenty-nine labeled features across outer

Cork-lined stainless steel safety flask tongs lock jaws around flask necks to prevent accidental drops during transfer of hot distillation vessels between bench stations

Used to demonstrate rotational-to-linear motion conversion

Two pith balls suspended on unspun silk from a brass pillar

Ratchet-stopped nickel-plated brass 25 mm micrometer screw gauge reading to 0

Simple Machines Gear Rack Model Pack Size_12 Twenty-nine labeled features across outerRotation 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.