Intensified bubble image level indicating system

Details Intensified bubble image level indicating system Intensified bubble image level indicating system

G - Physics

01

C

33/110

G01C 9/32 (2006.01)

Patent

CA 1138635

ABSTRACT OF THE DISCLOSURE Level indicating devices wherein at least a side portion of a bubble cavity is defined by a reflecting surface having at least a linear cross section lying generally in a plane aligned with or paralleling a light source and a bubble image observer (i.e., person or sensor). The surface is operable to receive light and reflect light therefrom, with light reflected from the surface, adjacent the bubble, defining a visually intensified bubble image. A wall opposite to the reflecting surface visually contrasts with the bubble image.

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