a long plastic tube and some water - if it is only something you are going to use once or twice a year than why go to the expense of a laser level, they are no more accurate than gravity on water.
the one I have used with great success is vented at both ends, you have to make sure the air bubbles are out of the tube which is time consuming, but the accuracy is as good as it gets. For a one off job it is a very cost effective solution, if I needed one on a weekly basis I would invest in something more user friendlyWhen building my garage about 20 years ago I purchased a water level. It was unvented and at £20 a complete PITA and waste of money. I resorted to using long straight(ish)bit of timber and a spirit level.
Being unvented, the air would move to one end and prevent the water from finding a true level.
When building my garage about 20 years ago I purchased a water level. It was unvented and at £20 a complete PITA and waste of money. I resorted to using long straight(ish)bit of timber and a spirit level.
Being unvented, the air would move to one end and prevent the water from finding a true level.
Water always finds a true level.
As long as the air is out, you won't get a more accurate or simpler level.
Yes, providing you have some way to secure both vials to the walls. TBH whilst reasonable quality ones (e.g Stanley Nivachoc) were quite affordable and very accurate, they could be a bit of a faff to use single handed and they were ever so slow to use, as well as potentially messy. That's why there probably isn't a single tradesman out there in the UK today still using them, and why the only quality model now generally available is the Stsbils one. All the other ones around seem to be cheap, shoddy Chinese tat. Lasers, on the other hand are smaller, less messy and far faster to use, not to mention being able to direct read (water levels often needed an offset stick to get the required true level) - albeit slightly less accurate and more prone to reading errors of a few millimetresThat said, I assume that the vented versions can be used by one person on their own.
will the laser extend this far?
Yes. Never come across a trade rated laser that does less than 40 metres. I was working near our dry liners this afternoon. They were using the green version of the laser you mentioned. Easily projected from one side of an apartment space to the other (about 20 metres) with no issues. Red version projects same distance as the green, the only caveat being that you may need subdued light to see the line on the red one - shouldn't be a problem at this time of year, it's high summer when you can have issues....will the laser extend this far?
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