Reddit reviews Topcon RL-H5A Horizontal Self-Leveling Rotary Laser with LS-80L Receiver - Dry Cell Battery - AdirPro Aluminum Tripod - 9' Grade Rod (8th')
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Range up to 2,600 feet with receiverAccuracy of ±1/16" or 1/8" at 100 feetSelf-leveling within ±5 degreesOptional manual single-axis leveling methodLaser Class-II; Laser Type-635nm, <1mW
This is the one I have.
It may be overkill for your application.