Spectra Precision DG613 Information Guide

Method 2: Setting Grade Rod on Top of Laser
Note: Using this method, the offset distance of 0.23 ft (70
mm) between the top of the Laser housing and the center of
the laser beam will be used.
1. Decide what elevation of the laser beam shall be used
above the invert.
2. Record the “cut-to-invert” information from the grade hub.
Rod reading on top of laser

Spectra Precision DG613 Specifications

General

Brand	Spectra Precision
Model	DG613
Category	Measuring Instruments
Language	English