5-64 ADS TRITON+ Manual
Extending Grade Pole to absolute bottom surface of invert
6. Read Grade Pole measurement from point where the Grade Pole
crosses the bottom of level or other flat, rigid item. Record
measurement.
Recording measurement for manhole depth
Installing the Mounting Bar
The Mounting Bar is designed to securely position the Long Range
Depth Sensor within a standard manhole frame that is between 21
inches (533 mm) and 28 inches (711 mm).
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