"470334-300"

Operates 1/2 to 3 volts, 100ma start-up / runs at 15ma no load.  Strong torque - 300 RPM @ 1/2 volt. Great for gear drives.  2mm shaft dia. Size 1 1/4" dia x 1 1/4" long. 

Excellent demonstration of compression for hooke's law. Approximately 300mm long with a 10mm diameter and wire of 19 SWG.

Useful anywhere desiccation is needed, these 72 mm cartridges contain inert, non-corrosive, and non-toxic silica gel.

These Scout balances are the next generation of portable balances for the classroom.