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Guides

Grettz 4m telescopic levelling staff fully extended, showing white face with black and red E-pattern metric graduations

How to Read a Levelling Staff: A Beginner's Guide
The E-pattern on a levelling staff looks confusing at first but is simple once it clicks. Here's how to read metres, centimetres and millimetres at a glance.

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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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Tradesperson kneeling to set up a Grettz green laser level on a tripod in front of a timber fence and blockwork under a blue sky

Best Laser Level for Bricklaying and Blockwork
Stringline still rules the bed joint, but a laser transforms how you set out and check courses. Here's how bricklayers use lasers — and which to pick.

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Grettz G4D green beam multi-line laser mounted on a wall bracket projecting bright green horizontal and vertical laser lines across an interior first-fix room with timber

Red Beam vs Green Beam Lasers: Which Should You Choose?
Green beams look brighter, red beams run longer and cost less. Here's how to choose the right laser colour for your trade and working conditions.

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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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