NSN 4920-01-546-4787

A portable instrument which performs critical test, such as propeller balance, in-flight engine monitoring, mils broadband, failure and trend prediction, reduction gearbox assembly break-in, on-wing engine diagnostics, torguemeter run-out, turbine seal break-in. may include interconnections, cabling, transducers, storage/carrying case and other related accessories. excludes: test equipment, helicopter rotor head balance and blade track run; balancing, machine, dynamic-static, horizontal; balancing, wheel, nonelectric; and analyzer, spectrum.