Accessory for carpenter levels

Geometrical instruments – Indicator of direction of force traversing natural media – With viewing aid

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Details

33379, 362 32, 362120, G01C 932

Patent

active

053615034

ABSTRACT:
An accessory for addition to a standard carpenter's level includes: a light source fastenable into the finger slot common to such levels and fiber optic, light-transmitting tubes extending from the light source to illuminate the bubble vials of the level.

REFERENCES:
patent: 1268622 (1918-06-01), Reynolds
patent: 3114507 (1963-12-01), Dommer
patent: 3192375 (1965-06-01), Olson
patent: 3751655 (1973-08-01), Codrino
patent: 4394714 (1983-07-01), Rote
patent: 4542447 (1985-09-01), Quackenbush
patent: 5025567 (1991-06-01), McWilliams et al.
Dolan-Jenner "Fiber Optic Selection Guide", Woburn, Mass. Catalog SG305, 1992, pp. ii, 1, 13, 19.

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