Thickness measuring device for insulating glass

Details Thickness measuring device for insulating glass Thickness measuring device for insulating glass

1988-05-05

1989-07-18

Evans, F. L.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

G01B 1106

Patent

active

048489131

ABSTRACT:
A thickness measuring gauge for insulating glass which includes, in the preferred embodiment, a sighting member with a front sight, a rear sight and a sight tube through which the user takes an angled sighting of the insulating glass with the device in contact with the near side surface thereof. A separate reflective member is situated on the far side of the insulating glass to reflect into view the image of a target member. The target member is attached to a movable slide affixed to the device, which may have its position adjusted so as to align the target reflection with the sight. A series of steps are formed on the movable slide, each of which represent a different thickness of single glass sheet (two or more of which comprise the insulating glass), while marks inscribed on the base of the device each represent a standard thickness of insulating glass. The sight-aligned position of the target is read in conjunction with the appropriate single glass sheet thickness so as to permit direct determination of the thickness of the insulating glass. The reflective member which is positioned on the far side of the insulating glass may be temporarily affixed thereto by a spring member connected to a suction cup adhering to the glass surface. A separate glass thickness gauge may be incorporated into the device to allow convenient direct measurement of the thickness of a single glass sheet.

REFERENCES:
patent: 3257895 (1966-06-01), Garraway

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