Direct height measuring device for surveying instruments

Details Direct height measuring device for surveying instruments Direct height measuring device for surveying instruments

1988-12-05

1989-12-26

Haroian, Harry N.

Geometrical instruments

Distance measuring

By flexible tape

33770, 33299, G01B 302

Patent

active

048888818

ABSTRACT:
A direct measuring device for the direct and exact measurement of the height of a surveying instrument above a ground point. The direct measurement device includes a frame having an upstanding portion and a pair of arms substantially normally extending therefrom. The upper arm has an adapter thereon which is similar to the base or centering flange of the theodolite or other surveying instrument to be used in the surveying operation. The adapter is positioned in an instrument support (tribrach) carried on the tripod in a manner similar to that which the base or centering flange of a surveying instrument is mounted in the tribrach, and a measuring tape secured to the lower arm of the frame measures the distance to the ground from the device. The surveying instrument is then positioned on the tripod in the place of the direct measurement device.

REFERENCES:
patent: 1654164 (1927-12-01), Eldridge
patent: 2575245 (1951-11-01), Carlson et al.

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