View Full Version : Accuracy of gradients....
19th Mar 2010, 10:25 PM
When measuring the gradients of paving, how more or less (+/-mm) accurate a reading do you obtain using a roto laser level compared to using a metal straight edge and spirit level. In this case, the roto, spirit level and edge are in perfect order.
20th Mar 2010, 10:28 AM
If your spirit level and straight edge are perfect and you eysight is perfect then theoretically the spirit level will give you infinite accuracy. Hope that helps ;)
20th Mar 2010, 11:53 AM
Errr....it's paving. Measuring to the nearest centimeter is fine, if you are expecting a perfect 1 in 100 slope for a meter wide path, you'll be disappointed. Use whatever tool is easier to work with. A Stabila level should be good to measure to 0.5mm per meter, if you can read the vial well enough.
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