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Double Right Angle Prism 

                          Compact and precise. Permits stepping off
                          angles 90° and 180°, with a center lens which
                          permits foresight viewing. Slot in handle for
                          plumb bob cord. 

                          Supplied with a belt loop Cordura case. Dimensions bottom
                          to top 3-3/4" (96mm) .
 
 
 

 

http://www.buysurveysupplies.com/measuringinst.html
 
SECO DOUBLE RIGHT ANGLE PRISM 

This compact and precise right angle prism allows for easy
determination of right angle points or rectangular points
between two targets. The protective metal cover rotates to
expose the pentagonal prisms. 

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