85x55mm steel trolley with 4x 20mm wheels

Some of the folks might recognize this device from your past or even present life. Well if you don't you have obviously dodged some physics classes where everyone was required to do various experiments with these (and we do not refer to the experiments where you simulate the bumper car features of these things, while teacher is not looking). These trolleys can be used as weapons off mass education with the help of friction, mass, gravity and the force! Anyways perhaps you can figure our an alternative use for this cart, in case you are not planning to teach yourself or someone with this. Eventually it does have 4 wheels in it, so at least you do not have to re-invent them.

Hey just as an idea, you can even turn this think into small camera dolly, which moves on top of rails, floor or table.

Trolley technical details:

• Material
  • Almost studentproof steel
• Flat surface size:
  • 85x55mm
• Wheel diameter:
  • 20mm
• Wheel thickness:
  • 3mm
• Wheelbase inner width:
  • 63.95mm
• Wheel axle diameter:
  • 2.95mm
• Mounting holes:
  • 2x 3.4mm holes for what ever you decide to mount in them.