Skip to content
  1. Free shipping on orders over £30

site setup

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.

Read more
Builder in hi-vis and hard hat checking a reading on a levelling staff against a stone wall, with a Grettz green rotary laser level set up on a tripod in the foreground

Laser Level Accuracy Explained: What ±mm/m Really Means
What laser level accuracy figures like ±2mm at 10m actually mean on site, how error grows with distance, and how to make sure your laser is still hitting spec.

Read more
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.

Read more
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.

Read more
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.

Read more
Tradesperson in a white hard hat and hi-vis vest setting up a Grettz green rotary laser level on a tripod against dark cladding, with a levelling staff mounted alongside

How to Set Out a Foundation With a Rotary Laser
Setting out a foundation with a rotary laser is the most important hour of any build. This is the practical, no-waffle UK trade guide — from tripod placement to FFL datums, corner readings, dig levels and common mistakes to avoid.

Read more