Here's the quote that breaks tool snobs' hearts, courtesy of a builder on a UK forum: accuracy comes from the physics of the laser itself, so "a £15 cheapy will have just as good an accuracy as a £700 Leica". The dear one is nicer to hold. The maths is the same.
So the real question isn't which brand. It's laser measure vs tape measure — and the honest answer is they're different tools wearing the same job title.
One more thing the spec sheets bury: beam colour matters. Red dots vanish in daylight. A green beam stays visible outdoors and in bright rooms — which is exactly where you lose a red one.
The SNDWAY SW-100G is the sensible middle: 100m green beam, built-in steel tape for the short stuff (yes, both tools in one), angle sensor, Type-C charging. £79.99 and the argument's over.
It bounces a laser pulse off the target surface and times the reflection. Point at a wall, press once, and the distance appears instantly on screen.
It bounces a laser pulse off the target surface and times the reflection. Point at a wall, press once, and the distance appears instantly on screen.
Yes — typically within ±2mm over a full room, which beats a sagging tape over anything longer than a few metres. Accuracy comes from the laser physics, not the price tag.
Yes — typically within ±2mm over a full room, which beats a sagging tape over anything longer than a few metres. Accuracy comes from the laser physics, not the price tag.