This is a robust laser unit with plenty of rubberised plastic in the construction and all the corners are well protected. Cycling through laser modes is straightforward. Choose from cross, horizontal, and vertical by simply pressing the button on top.

When it comes to accuracy, the KT360A is ideal for the keen DIYer. The accuracy is measured to ± 3 mm/10 m and has an automatic levelling range of ± 4 °. I used my spirit level to see if I could find any deviation, but everything seemed spot on from a metre up to 5 metres away. Accessories The most common and more budget-friendly laser type found in this sort of tool is red. The original laser level colour, they’re reliably accurate and not expensive, but their range is limited, and these laser levels can be hard to see in bright areas and almost impossible outside. Green Lasers Harry has real-world tested 46 products for DIY Garden, and is one of our more experienced testers. Out of bright sunlight, and especially in the dark, the laser was easy to find up to 30 metres away. I was guessing at the exact distance, but it was far enough away to be impressive. For most jobs that a DIYer will take on, it’s absolutely fine. The protection rating is listed as IP54, which means it’s protected against dust ingress, but not exactly waterproof. It’s going to be fine in a rain shower, but don’t expect to be able to drop the laser in a pool of water without damage. Operation

QUESTIONS & ANSWERS

Something I really like about this laser level is that you can still use it while you’re charging. Too many USB powered devices shut off while charging, which is annoying if you just need to take one more measurement when the battery is running perilously low. Overall There are three laser modules on this level. You get a horizontal one mounted on the top, and two vertical lasers mounted on the front and side of the unit. You can turn on each laser individually, or cycle through the different modes to shine lasers across the floor, walls, and ceiling. When you turn on the red laser function, you can cycle through three modes, horizontal line, cross line and vertical. There’s a difference between this tool and the best laser levels on my list though. You need to use the spirit levels and the laser together to get an accurate straight line. It’s not difficult to do, but obviously takes more effort than a self-levelling machine. The removable battery is Lithium Ion, and it provides the laser with up to 35 hours operating time with one laser turned on, up to 20 hours with two lasers turned on, and up to 12.5 hours of battery life on full power with all three lasers visible. That’s impressive, and hopefully means you won’t run out of battery during the job.

The dual beam lasers are high power class 2 red ones that self-level within 4 degrees. But the feature I really like is the plumb mark. The laser can fire out a pair of highly visible dots that are perfectly plumb through the top and bottom of the unit. I don’t have to tell you how often this will come in handy.Green laser levels have a longer working range than red lasers and are brighter and easier to use outdoors. However, they are that much more expensive.