Distance measuring equipment (DME), used by many pilots because of its convenience during flight, consists of airborne and ground equipment usually co-located. The DME provides distance (and in some systems groundspeed) information only from the ground facility. DME(P) is precision DME used in conjunction with MLS.
The rugged Spectra Precisionureg; Laser HD50 Handheld Distance Meter is designed to give specialty contractors a high-accuracy, one-person distance measuring and estimating tool to measure remote and difficult-to-reach places. Accurate to 1/6 (1.5 mm) across the entire measuring range, the lightweight, portable HD50 is more accurate than conventional tapes to help contractors avoid costly mistakes and reduce expensive rework. A visible laser dot lets you safely measure hard-to-reach places or hazardous situations, such as large heights, factory interiors or over water, remotely or from a distance. This capability increases safety and efficiency, as well as provides high accuracy and quick payback.