Measures +ve conductor rail vertical position: 0 to 5.5 inches (0 to 140mm) (lockable from 4ft.)
Measures conductor rail lateral position: -1.57 to 3.54 inches (-40mm to 90mm) from nominal
Retracts to only 5.25 ft. (1.6m)
Fully non-conductive from GRP & Nylon 6
Factory calibrated for guaranteed accuracy.
Folds in two pars, complete with shoulder bag