Verifying Grade
P/N 7010-0341 www.topconpositioning.com
3-13
2. Set the Grade Checking Lath on the edge of the newly cut
ground so the level bubble extends over the Sonic Stringline
(Figure 3-17).
Figure 3-17. Check Finished Grade
3. Tilt the Grade Checking Lath to center the level bubble.
Finished grade is correct if the level just touches the Sonic
Stringline (Figure 3-17).
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