Interpretation ID: nht93-9.4

DATE: December 6, 1993

FROM: Tilman Spingler -- Automotive Equipment Div. 2, Robert Bosch GmbH

TO: Chief Counsel -- NHTSA

TITLE: Petition for an "Exemption for Inconsequential Noncompliance" to FMVSS 108, S7.8.5.2 (On Vehicle Aiming)

ATTACHMT: Attached to letter dated 1/26/94 from John Womack to Tilman Spingler (A42; Std. 108; Part 573)

TEXT:

FMVSS 108 requires in the above mentioned paragraph a graduation of not larger than 0.19 degree for the scale of the vertical and 0.38 degree for the scale of the horizontal aim indicator. To make the scales more clearly legible and to avoid confusions we kindly ask for the permission to use scales with graduations of 0.2/0.4 degree.

We principally prefer scales with numbers indicating the graduation.

It is our opinion that there is no influence on the accuracy of aim because 1/100 degree is less than the width of the graduation-lines on bubble vials and scales used on headlamps.