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Rotary Lasers

Groundworker in hi-vis holding a measuring staff beside blue ducting and rubble on an open site, with a Grettz green rotary laser level set up on a tripod in the foreground

Best Laser Level for Groundworks and Civils
How to choose a laser level that stands up to groundworks and civils — the specs that matter outdoors, and which Grettz rotary laser fits your work.

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Groundworker in hi-vis holding a levelling staff beside blue pipework and rubble in an open trench, with a Grettz green rotary laser level set up on a tripod behind

How to Set Falls for Drainage With a Rotary Laser
A practical guide to setting accurate drainage falls with a rotary laser, covering gradient calculations, the dual-grade method and the staff-and-receiver method.

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Complete Grettz G80 green beam dual-slope rotary laser kit laid out — tripod, green hard case, laser unit, LR receiver, remote control, battery packs, levelling staff, target plate and charger

What Is a Dual-Grade Rotary Laser? Slope and Fall Explained
Dual-grade rotary lasers project a set gradient, not just a flat plane — essential for drainage falls, ramps and driveways. Here's how they work.

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Grettz green rotary laser level in its open green moulded carry case on the ground outdoors, with accessories bag alongside

How to Set a Datum Point on Site With a Laser Level
A datum is the single reference height every level on site is measured from. Here's how to establish one properly with a rotary laser and staff.

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Grettz green rotary laser level set up on a tripod on grass at dusk, sun setting through bare trees behind on an outdoor site

How to Use a Rotary Laser Level: A Step-by-Step Guide for Site
A practical, step-by-step guide to setting up and using a rotary laser level on site — from levelling the tripod to reading grade with a receiver.

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