Combined barometer-altimeter gauge

Abstract

Abstract 1. Pocket barometer and altimeter comprising a housing (1), an opening (2) in said housing, an atmospheric pressure gauge and indicating means (26) characterized by the following elements : a) a transformer (21) for transforming the atmospheric pressure impact on said pressure gauge into an analogous electrical voltage ; b) an electric circuit element including digital indicating means (26) providing a digital reading of the atmospheric pressure or the altitude respectively in correspondence to the analogous electrical voltage ; c) the housing (1) being provided with switch-over means (5; 25) for switching the electrical circuit element to an atmospheric pressure reading or an altitude reading, and d) the housing (1) being provided with a knurled knob (8) by means of which the digital indicating means (26) may be set to a preselected atmospheric pressure or to a preselected altitude respectively.

Inventors

• 👤 Helmut Ing. Grad. Hund
• 👤 Joannis Dipl.-Ing. Troussas
• 👤 Alfred Ing. Grad. Briem

Bibliographic Details