Altimeter with Kolsman window clarifier

Details Altimeter with Kolsman window clarifier Altimeter with Kolsman window clarifier

2008-01-01

2008-01-01

Allen, Andre J. (Department: 2855)

Measuring and testing

Fluid pressure gauge

Reexamination Certificate

active

11294619

ABSTRACT:
An altimeter having a magnifying element configured to magnify a barometric scale for use in setting the altimeter to a local barometric pressure. The magnifying element can be a plano-convex lens positioned on a transparent cover of the altimeter over the barometric scale. The lens can be adhered to the transparent cover with an adhesive or can be formed as part of the transparent cover. In one embodiment, the magnifying element is included as part of a cover that can be secured to an altimeter.

REFERENCES:
patent: 2465775 (1949-03-01), White
patent: 2832220 (1958-04-01), Logie
patent: 3685360 (1972-08-01), Raznov
patent: 3915007 (1975-10-01), Johanson et al.
patent: 3978730 (1976-09-01), Anderson
patent: 4020787 (1977-05-01), Castro et al.

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