Shinwa Motor Dresser (Brushed Motor Dyno)
 

Mint condition Shinwa motor dresser, used for tuning brushed motors. It displays RPM and current draw and can be used for running-in, motor comparison, timing adjustment, checking duff motors etc.

It should also work for brushless motors if you leave the motor connected to the ESC for controlling the power, but I haven't tested this.

Fantastic tool. Complete with tuning tips from the master of motor tuning, Mr Pete 'Awesome' Stevens.

£20 including UK postage and paypal fees.