Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent level for the one-man crew

I bought my Robolaser almost three years ago to level a patio that I built in my back yard. The unit was calibrated in the factory and did not have to make any adjustments. The Robolaser made my job a lot easier. The laser dot was bright enough for the Texas sun and the remote control was easy to handle. After a couple of years of occassional use, I checked it and it was still perfectly level. I would love to have a rotary laser, but my budget does not allow it. The Robolaser is a good, inexpensive alternative.