J Concepts Aluminum Ride Height Gauge 10-40mm Black

This is the JConcepts Adjustable Flight Height Gauge.

FEATURES:
Steps front and rear chassis height of 1/8 and 1/10 scale RC
    cars
Laser engraved with finished measurements from 10-40mm for usage with a
    variety of cars
Constructed of machined billet aluminum, black in color
Easy design with 2 rotating pieces and rounded manager at touch-off
    point that constantly fulfills chassis at proper angle

INCLUDES:
Adjustable Flight Height Gauge in Black
Foam-lined Plastic Latch Box

REMARKS:
(Any unique application or something it will not work with?)