This $26 Laser Distance Measure Does All the Math For You
Only luddites use tape measures anymore. This laser distance measurer takes instant distance readings of up to 164', and includes several built-in area calculation functions, in case you’re a little rusty on your middle school geometry.

Only luddites use tape measures anymore. This laser distance measurer takes instant distance readings of up to 164', and includes several built-in area calculation functions, in case you’re a little rusty on your middle school geometry.