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How to Calibrate a Rotary Laser Level: Field Check & Service Guide
How to check and calibrate a rotary laser level in the field. Two-peg test method for Topcon RL-H5A, Spectra LL500, Leica Rugby. When to send in for factory calibration.
How to Set Up the Topcon RL-H5A Rotary Laser
Step-by-step setup guide for the Topcon RL-H5A rotary laser: tripod placement, leveling, receiver pairing, and grade work. From Express Tools — authorized Topcon dealer.
How to Transfer Elevation Across a Job Site with a Rotary Laser
Step-by-step guide to transferring elevation benchmarks across a construction site using a rotary laser. Backsight setup, height of instrument calculation, and elevation transfer for Topcon RL-H5A, Spectra LL500, and Leica Rugby.

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Gradelog is the field-execution platform built for grading and earthwork crews. Log grade shots, track cut/fill, document phases with photos, and generate as-built reports — from the cab to the office.
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