Tensitron is pleased to announce its 5th generation of digital aircraft cable tension meters, using the latest technology, software, and design improvements providing unsurpassed accuracy and resolution for numerous material sizes and tension ranges.


The Model ACX-1 series of Aircraft Cable Tension Meters are designed to precisely measure static tensions in aircraft cables. Indicate values in Lbs, daN or KG in flexible cables with diameters from 1/16” up to 1/4”, CWT cable sizes from 5 to 25 and metric cables from 2.0mm to 4.0mm. Directly read tension from 5 to 1200 pounds (depending on model). Calibrations for 7/32” and other cable sizes can be added to the cable selection menu upon request.

  • Accurate
  • Dependable
  • Reliable
Click HERE for product details.


First, select the cable size from the instrument’s menu. Next, separate the instrument’s outer cable contact guides by rotating the engagement lever open and inserting the instrument onto your tensioned cable. Then rotate the lever closed to engage the instrument onto the cable. Your cable will drop automatically into place and readings will appear on the display once the lever is engaged.

Standard Features of all models:

  • Large, easy to read, backlit, color display with adjustable backlighting.
  • Display shows tension, description of cable selected, dynamic color bar graph indicating changing tensions (Amber = tension too low, Green = correct tension range and red= over range), the previous 5 tension readings along with their average and the battery charge level
  • Select tension values to display in Lbs., daN or KG
  • Depress the "Store” button to record and average your previous five readings along with their average
  • Data Logging Feature: Record tension values to the instrument’s memory.
  • Data Statistics: Monitor your process by viewing count, average, maximum, minimum, and standard deviation values of your logged data.
  • Data Averaging: Use this feature to adjust the stability of your displayed, tension readings. This feature allows the user to select the duration the instrument takes tension readings over and posting that average to the display. Options are: 1, 2, 5 and 10 seconds. This is a rolling average, meaning that only the readings taken in the last 1, 2, 5 or 10 seconds (your choice) will be averaged and displayed.
  • Up to 10 additional custom calibrations may be programmed into the instrument
  • Extremely accurate custom calibration procedure employing up to a 10-point multilinearization procedure.
  • All calibrations are password protected
  • Adjustable LCD refresh rates allowing for stable, digital readouts
  • Automatic shutoff after several minutes of non-use
  • Instruments may be operated continuously while connected to power supply
  • Set-Point feature allowing user to define high and low point specifications which are then shown on the main display as an active, color changing bar graph.
  • Rechargeable NiMH batteries with power supply provided. Approximately 12 hours of continuous use depending upon backlighting intensity.
  • Power supply operates with input voltages from 100 – 240V and includes several, interchangeable adapters allowing use with European, Australian, US, English and other plug configurations.
  • Optional features including: Analog Output and Serial Output
  • All models typically available from stock
  • Includes easy to use, cable diameter gauge to accurately determine correct cable size
  • Numerous application specific models available
  • Durable, lightweight carrying case with protective foam inserts
  • All instruments factory-calibrated and ready for use. Calibration certificate included and all calibration values traceable to National Standards
  • All new instruments are warrantied against defects in materials or workmanship for the period of one (1) year


  • Battery charge level
  • Selectable Tension in Lbs., KG or DecaNewtons
  • Select Cable and Size. Instrument automatically adjusts calibration
  • Active, color changing Bar Graph
  • Store and Display up to 5 separate tensions readings and their average

Standard ACX-1 Instruments:

For North American sales, click HERE to receive a quote. For sales outside of North America, click HERE to reach a distributor. Contact Tensitron at 303-702-1980 or for details.

# Model Cable Selection Accuracy - Full Scale Resolution (Lbs.) Range (Lbs.)
1 ACX-100-1 1/16, 3/32, 1/8, 5/32" 2% 0.5 5-100
2 ACX-100-M-1 2.0, 2.5, 3.5mm 2% 0.5 5-100
3 ACX-100-FM-1

1/16, 3/32, 1/8, 5/32",

2.0,2.5, 3.5mm

2% 0.5 5-100
4 ACX-100-CMB-1

1/16, 3/32, 1/8, 5/32"

5, 10, 15, 20, 25 CWT

2% 0.5 5-100
5 ACX-250-1

1/16, 3/32, 1/8, 5/32, 3/16"

NSN#: 6635-01-641-9516

2% 0.5 20-250
6 ACX-250-M-1 2.0, 2.5, 3.5, 4.0mm 2% 0.5 20-250
7 ACX-250-FM-1

1/16, 3/32, 1/8, 5/32, 3/16",

2.0, 2.5, 3.5, 4.0mm

2% 0.5 20-250
8 ACX-250-CWT-1 5, 10, 15, 20 & 25 CWT cables 2% 0.5 20-250
9 ACX-250-CMB-1

1/16, 3/32, 1/8, 5/32, 3/16",

5, 10, 15, 20, 25 CWT

2% 0.5 20-250
10 ACX-500-1 3/32, 1/8, 5/32, 3/16, 1/4" 2% 1.0 40-500
11 ACX-500-M-1 2.5, 3.5, 4.0, 4.5mm 2% 1.0 40-500
12 ACX-500-FM-1

3/32, 1/8, 5/32, 3/16, 1/4" &

2.5, 3.5, 4.0, 4.5mm

2% 1.0 40-500
13 ACX-1200-SCB-1 3/16", 7 x 19 construction only. NSN #:6635-01-602-6324 3% 1.0 40-1200

*Calibrations for 7/32" and for additional metric-sized cables can be added to the cable selection menu upon request.

Accuracy for custom calibrations is material specific.

Previous Part Numbers

Previous Part No. Cables Measured Tension Range Current Part No.
ACX-CMB-1 1/16" - 3/16" and 5 - 25 CWT 20-250 lb. ACX-250-CMB-1
ACX-CMB-M-1 1/16" - 3/16" and 2.0 - 4.0 mm 20-250 lb. ACX-250-FM-1

5, 10, 15, 20 and 25 CWT

20-250 lb. ACX-250-CWT-1

Available options and accessories for all ACX-1 instruments:

For North American sales, click HERE to receive a quote. For sales outside of North America, click HERE to reach a distributor. Contact Tensitron at 303-702-1980 or for details.

Option / P.N. Description

Analog Output Option. 0-5 VDC or 4-20mA with software definable ending sequences. Provided with 10’ cable and data outputted at 40 Hz

-E RS-232 Serial Output option. Provided with 10’ cable with DB-9 connector to interface with your receiving device. USB to DB9 adapter available on request. Select data sampling rate from 1, 2 or 5 Hz

Power Supply, digital instruments (with interchangeable adapters)

Serial Output Note: Your receiving device will require a "software wedge" in order to upload data from the instrument and there are many of these programs to choose from. (If you require a "software wedge" program there is "freeware" software available as long as it is not used in countries with encryption restrictions [US, Europe, and Canada are fine] and usually this "freeware" does not need to be installed to operate.)


Tensitron calibrates instruments using the “free hanging weight” method. This means that we vertically suspend an accurately-sized cable, attach a NIST-certified weight to the bottom of it, engage the instrument on the cable, and the tension reading on the instrument will correspond to the amount of the weight. If you require a different calibration method, please contact Tensitron.

To verify the accuracy of your Tensitron meter, use the “free hanging weight” method as a standard rather than comparing your meter’s readings to those of another gauge. Also do not use a tensioning device that converts rotational torque into tension values, and do not simulate tension using a calibration bar, because these systems are often inaccurate and may damage your meter. If you need assistance, please refer to your meter’s Operating Instructions or contact Tensitron.


  • Size (All but ACX-500-1 and ACX-1200-SCB-1): 8.14" L x 3.37" W x 1.39" Thk.
  • Size (ACX-500-1 and ACX-1200-SCB-1): 8.14" L x 5.20" W x 1.56" Thk.
  • Approximate weight: 1.5 Lbs depending upon configuration
  • FCC certification

Cable Diameter Gauge

This is a Cable Diameter Gauge. It lets users measure the cable to be measured so they can easily select the correct cable from the meter’s menu. It is included with each ACX-1 at no additional charge.

Dimensioned Drawings

Click on images for full-size view.

Click and download to view 360°

Click and download to view 360°

Downloadable Files:

Makers of the original Saxl instruments. American made and serviced by US craftsmen since 1935. Calibrations traceable to the National Institute of Standards and Technology (N.I.S.T.)