Accession Number:

AD0702283

Title:

OPTICAL THEODOLITE,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1969-11-25

Pagination or Media Count:

7.0

Abstract:

An Author Certificate has been issued for an optical theodolite containing a dismountable telescope with optical micrometer, an optical reading system, and a horizontal limb. For simplicity of design and convenience in calibration, the clearance-operating optical reading system of the vertical circle is designed in the form of a single transmitting arm consisting of two alidade prisms and two coaxially arranged prismatic objective lenses. To eliminate delayed action on the part of the alidade, the theodolite has a fastening mechanism designed in the form of gears. These gears transmit the movement toward the center to a Cardan shaft with a bushing-rested ball. To protect the vertical axial system from damage during transport, the theodolite is equipped with an unloading arrangement, combined with the mechanical centering device and designed in the form of a beaded nut. Finally, for increased sighting accuracy, the theodolite employs an apochromatically corrected telescope. Author

Subject Categories:

  • Geodesy
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE