The Adamson Digital Inclinometer has a built-in 3mW laser for precision setup and angular accuracy. The laser runs at a 735nM wavelength, this wavelength provides better visibility compared to a standard 750nM. This 3 piece set includes a Digital Inclinometer, Reader, 10m Tape Measure, as well as an XLR converter cable for communication, all in a durable light-weight carrying-case, with dye-cut foam interior to securely hold all components in place during transit.