The ACX-1 series digital tension meter is a hand-held device for measuring tension in aircraft cables of various sizes and specifications. The tension scale is adjustable for measuring in Lbs, Kg or Newtons, in ranges from 20-500 lbs. The large, easy-to-read backlit color display shows Tension, Battery Charge Level, and Cable Size selected. A memory button allows the storage of up to five separate tension readings, plus an average of these values. The instrument is available in several different models to accommodate any size or standard aircraft cable designation. Select the cable size, and the instrument automatically adjusts the calibration from pre-programmed data. Or store up to ten custom calibrations in the instrument. Operated from either rechargeable batteries or AC power, the unit shuts off automatically after 10 minutes of non-use. For travel or storage, the unit is well protected in a durable, lightweight carrying case. Factory calibrated to national standards; calibration certificate included.