Insolation survey device

Details Insolation survey device Insolation survey device

1977-12-21

1979-12-11

Aegerter, Richard E.

Geometrical instruments

Miscellaneous

Light direction

33273, 356213, G01C 100

Patent

active

041775660

ABSTRACT:
An insolation survey device for determining the exposure of a reference point to a cyclically varying radiation source. The device employs a base member for horizontally supporting a display sheet premarked with a grid calibrated in units corresponding to the measurement being taken. A transparent reflective member is supported by the base member over the display sheet so that a reflected view of the surrounding appurtenances and the view of the display sheet, through the transparent dome, form one composite picture. In the composite picture so formed, the period or periods, if any, within the radiation cycle that the reference point will be exposed to said radiation appear as unobstructed sky superimposed onto the premarked grid. A compass is provided to directionally align the device and means are provided for orienting the base member in a true horizontal plane.

REFERENCES:
patent: 830769 (1906-09-01), Chandler
patent: 1817350 (1931-08-01), Clay
patent: 2884697 (1959-05-01), Sylvester
patent: 3002278 (1961-10-01), Weems
patent: 4015116 (1977-03-01), Bahm

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