The Kel-Thruster" can be used to test the thrust capabilities of toy propellers. Simply attach a propeller with a 2mm hole, zero the scale and turn on the motor. Thrust readings can be in grams or ounces. The Kel-Thruster" can be used to test commercial or student-made propellers.
Requires variable speed power supply (#841051 - see below).
Also available with Computer Interface, see below.