Laser Measure, OLUFEY 165ft Laser Distance Meter

The device is sensitive to the surface being aimed at. Wood and anything glossy gave up to +/-5mm errors and inconsistent readings when repeating the exact same measurement. Matt painted surfaces worked best and gave completely consistent and accurate readings, better and much easier to take than using any human operated tape measure. To achieve accuracy and consistency, I now place a piece of white copier paper and blutack if measuring against anything wood or shiny. This also helps with aim over longer distances. Used this way, I found it mm accurate to the measuring (1 mm) resolution of the machine.

I have used the area and volume feature to find out the size of rooms in my house and it worked. I also used the pythagoras mode for fun and it worked too.

When I set the laser to feet, inches, fractions unit mode and measure from the rear, it displays two digit inch numbers incorrectly by dropping the tens position.