The figure inclosed by lines through the points contact of the wheels of a vehicle, etc., with the surface or rails on which they run; more esp., the length of this figure between the points of contact of the two extreme wheels on either side.
noun The distance between the front and back wheels of any vehicle with two axles. In skateboarding this is measured between the two sets of inner-most truck holes. (the rear set of the front truck and the front set of the back truck).
The distance between the centers of the front and rear wheels. Measuring and comparing the wheelbase on both sides of a vehicle can identify rear axle misalignment or front wheel setback.
The distance from the center of the front wheels to the center of the rear wheels.
The distance between the two wheels of a crane along the crane beam.
the distance between the two wheel axles.
Distance from center-to-center of outermost crane wheels.
The horizontal distance between wheels on a vehicle. The wheel base was important when using turntables to ensure that the vehicle would fit, and on curves, since vehicles with a short wheelbase will traverse curves more easily.