An apparatus for measuring distance when moving a vehicle, for instance, for measuring how far to move a tractor of a tractor-trailer rig when sliding (e.g., tandem) axles of the trailer, for example, to equalize weight between wheels or axles of the rig. A scale is mounted on the vehicle with (e.g., evenly-spaced) indicia arranged in a line parallel to a forward or reverse direction of the vehicle. The scale is positioned on the vehicle where the driver, while driving the vehicle, can see the scale and can sight past the scale to a stationary visual reference located outside the vehicle (e.g., on the driving surface) to see how far the vehicle has moved. The scale may be on an elongated member which may be attached to the vehicle, for example, to a step below the driver.
TANDEM SLIDE RULE
25.05.2023
Patent
Elektronische Ressource
Englisch
Engineering Index Backfile | 1888
|NTRS | 1983
|Airplane performance slide rule
Engineering Index Backfile | 1937
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