glass guide

glass guide

[¦glas ′gīd]
(graphic arts)
In microfilm photography, a transparent bar of optical glass employed to guide documents through the photographic field.
References in periodicals archive ?
HAT, a recent winner of an Accelerate Manufacturing Award, was approached by Modec for their expertise in aluminium extrusion forming to help them produce a complex 3D shape for the glass guide channel and the division bar.
The glass guide channel appears on the side windows of the windows while the division bar is used to divide the glass on the windscreen.