Springforce will measure shoe tension on all cars, as well as comm brush tension on T-jets. Adjustment screw needs to be set at track rail height with a caliper, move screw up or down by turning it to desired height. Then simply turn on, let meter zero out, and choose your method of calibration. Set car guide pin in left opening, read measurement.  Place guide pin in right opening, read measurement. For T-jets comm measurement, back adjustment screw out to the height of your comm brushes, turn chassis upside down, place comm spring on screw check measurement. Repeat for other comm brush.
 
Made-to-Order.
 
Customization Options:
Choice of Colors
 
Specify what color you'd like the product made in, in the text box or email us at whitedogscaleracing@outlook.com