Viewing device for a bubble level

Details Viewing device for a bubble level Viewing device for a bubble level

1977-08-31

1978-08-01

Phillips, Charles E.

Geometrical instruments

Indicator of direction of force traversing natural media

With viewing aid

362 84, G01C 932

Patent

active

041034309

ABSTRACT:
A viewing device for use in conjunction with a level of the type having a see through bubble housing comprising two opposed windows and a bubble chamber situated therebetween. The device includes a base containing a luminescent panel that is arranged to seat in contact against one of the bubble housing windows whereby the panel illuminates the bubble chamber, a post perpendicularly secured to the base and extending upwardly beyond the other bubble housing window and a light shield slidably mounted upon the post and being arranged to seat in locking engagement against the other bubble window, the light shield containing a viewing aperture through which the bubble chamber can be seen and a mirror adjustably supported in the shield to permit off axis reading of the bubble.

REFERENCES:
patent: 2639514 (1953-05-01), Garrison
patent: 3064535 (1962-11-01), Anderson
patent: 3300867 (1967-01-01), Sampson
patent: 3368287 (1968-02-01), Ault
patent: 3862500 (1975-01-01), Wibom

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