0430
    TRIPLE PRISM  
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Maker

Wild Heerbrugg Switzerland

Model

GDR11 (Part No. 258979)

Serial Number

---

Dimensions

170 x 115 x 288 mm

Image

 

Wild GDR-11 Triple Prism Reflector

Description

Reflector with three rectangular EDM prisms. The prisms are arranged vertically above each other, tiltable (about the centre of the middle prism) and rotatable (about the vertical axis).

Triangular target at bottom for direction measurements.

Gun-sight on top for pointing to EDM instrument.

The prisms are uncoated, allowing for total reflection between glass and air. The back cover can be removed so that the back surfaces can be cleaned (from dust and condensation).

No tribrach is included.

See also items 0420 and 0431.

History & comments

Designed for the first electro-optical distance meter (DI10 Distomat) of Wild Heerbrugg, Switzerland. The rectangular shape of the individual prisms is due to the side-by-side arrangement of the transmitting and receiver optics of the Wild Distomat DI10. Manufactured circa 1969.

Conservation

In original plasticised canvas bag 210 x 170 x 355 mm

Condition

Prism: good; Bag: worn

Remarks

Donated by Bill Rein, Surveyor, Balgowlah NSW, April 2012

Dates

Catalogued by J. M. Rüeger on 1.6.2015. Photos by J. M. Rüeger.

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