The Stabila LD-420 laser measure instantly converts measurements to any scale - inches to mm, meters to feet, etc... - with available scales: 1/8", 1/16", 1/32", 0'00", 0'00"1/32, 0'00"1/16, 0'00"1/8, 0.0', 0.00m, 0.000m. Integrated calculation functions allow you to add your labor and material costs to the memory ― for example the working hour costs, the price per square foot of a material ― then measure the rooms, use your price factors to calculate the costs, and present your offer in next to no time. You can call up additional information for many functions (Pythagoras, area, volume etc.): e. g. scope, wall and ceiling areas etc., while cost factors can be added to stored measurements for accurate and immediate bidding. The LD-420 fulfills the new international standard ISO 16331-1 certification for repeatable accuracy.