Prisms with Addition edge

(NIKON, PENTAX, SOKKIA, SPECTRA PRECISION, TOPCON, TRIMBLE)
 
Compatible with the original prisms of the above manufacturers. According to the instrument manufacturer, the required additive constant (0 or - 30 mm) by simply unscrewing the prism in the prism holder can be achieved. Due to its design, it can in the configuration with an offset of 0 mm to errors coming in the distance and angle measurement, if the prism is not carefully aligned to the total station.
The reason lies in the relatively large difference in the visible prism center in relation to the standing or tilt axis of the prisms.

 
Universal prism HP17, Offset 0/-30 mm

Universal prism HP17, Offset 0/-30 mm

Robust universal prism with holder made ​​of plastic.

Universal prism, Offset 0/-30 mm

Universal prism, Offset 0/-30 mm

Robust universal prism with holder and large, removable target plate of metal.


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