Geometrical instruments – Miscellaneous – Light direction
Patent
1998-01-17
2000-04-18
Bennett, G. Bradley
Geometrical instruments
Miscellaneous
Light direction
33566, G01B 300
Patent
active
060499877
ABSTRACT:
An improved system and method of gridded measurement for the cutting of construction materials which comprises the imprinting of visually precise commonly used measurement markings upon the surfaces of construction materials during the manufacturing process to save time and improve the accuracy of cutting the construction materials on a job site wherein the improvement lies in the use of a plurality of non-perimeter horizontal and vertical unit measurement markings; protractor markings; and inverted numerals, informational markings, nailing guides, product specification markings, and curved lines. Angled cuts may be easily made by cutting along the opposite corners of a predetermined number of grids counted in both horizontal and vertical directions, through use of the protractor markings, or a combination of both. In preferred embodiments unit markings are numbered for quick dimensional reference and visually precise fractional markings are also used. The lines for commonly used markings may be highlighted, darkened, doubled, tripled, dashed or dotted, colored, or otherwise enhanced for easy recognition. Applications may include, but are not limited to, use on structural and non-structural panels such as wallboard, shower board, oriented strand board (OSB), insulation, fire retardant panel products, gypsum board, plywood, and other substantially rectangular material which must be cut to exact measurements on a construction job site.
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Bennett G. Bradley
Morse Dorothy S.
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