Pacific Scientific T60-1001-C9-1A Cable Tensiometer – 1/8" to 1/4", 150 to 450 lbs
The Pacific Scientific T60-1001-C9-1A is the heavy-range model in the T60 series, engineered for primary flight control cable systems where tension specifications push well beyond the capacity of light and mid-range tensiometers. With a range of 150–450 lbs across cable sizes from 1/8" to 1/4" and carrying the U.S.A.F. Type C9 designation, the T60-1001-C9-1A is the instrument maintenance professionals reach for on large turboprops, regional jets, rotary-wing platforms, and military aircraft where primary control cable tensions routinely exceed 200 lbs. Like its C8 sibling, it requires no riser blocks and no calibration chart — tension is read directly off the dial, and cable size is identified by the built-in integrated gauge.
The Right Instrument for High-Tension Primary Control Cables
Primary flight control cables on larger aircraft are specified at tensions that lighter tensiometers simply cannot accurately measure. The T60-1001-C9-1A fills that upper-range requirement with the same riser-free, direct-reading platform that defines the T60 series. There are no riser blocks to select or manage, no calibration chart to reference, and no conversion step between dial reading and actual tension in pounds. A built-in integrated cable diameter gauge identifies the cable size directly on the instrument — clamp on, read the gauge, align the dial, read the tension. The entire operation is completed with one hand in seconds, even in severe cold with gloves or service mittens. At 150–450 lbs, the 3-point positive cable grip is especially important: the instrument maintains a firm, stable contact with the cable even when hanging free under significant load, preventing the dislodgement that flat-sector designs are prone to at high tensions.
Purpose-Built for Heavy Cable Systems
- 150–450 lb range — covers the upper tension demands of large turboprop, regional jet, and military primary control cables
- No risers required — handles 1/8", 3/16", 7/32", and 1/4" cables with no accessories to select or manage
- Built-in cable diameter gauge — integrated gauge identifies cable size directly on the instrument
- Direct-reading dial — tension displayed in pounds; no chart conversion step
- 3-point positive cable grip — critical at high tension loads; prevents dislodgement when instrument hangs free on cable
- Push-button pointer lock — holds dial reading precisely before removal in confined or low-visibility areas
- Serialized calibration bar — serial-matched field accuracy verification included with every unit
- Over-range durable — not damaged by cable tensions beyond the rated scale
- Cold-weather capable — one-handed operation with gloves or service mittens at -65°F
Technical Specifications
- Tension Range: 150 – 450 lbs
- Cable Sizes: 1/8", 3/16", 7/32", 1/4"
- Cable Construction: 7x19 stranding; MIL-DTL-83420 flexible aircraft cable
- Accuracy: ±5% of indicated reading or one minor division, whichever is greater
- Indicator: Black dial, direct reading — no chart conversion
- Risers Required: None
- Cable Gauge: Integrated built-in
- Pointer Lock: Push-button
- Calibration Reference: Serialized calibration bar (serial-matched to instrument)
- USAF Equivalent: Type C9
- Operating Temperature: -65°F to 160°F (-53°C to 71°C)
- Operation: Fully mechanical — no batteries or electronics required
- Origin: Made in the USA
- Warranty: 1 year on new units
Typical Applications
- High-tension primary flight control cable rigging on large turboprops and regional jets
- Rotary-wing and helicopter primary control cable tension verification
- Military aircraft maintenance where cable tensions are specified above 150 lbs (U.S.A.F. Type C9)
- Post-repair and return-to-service cable tension checks on heavy control cable systems
- MRO facilities servicing large-cabin, transport-category, and military aircraft
- Cold-weather flight line maintenance requiring glove-compatible one-handed operation
Pacific Scientific T60-1001-C9-1A Calibration
Each T60-1001-C9-1A ships with a serialized calibration bar for fast field accuracy verification — clamp the instrument on the bar and compare the reading to the bar's tag value. A reading within ±2% confirms the instrument is within specification; outside that range, recalibration is required. For formal recalibration, annual service is the standard interval, or immediately following any overload event, mechanical shock, or drop. Because this instrument is used on primary flight control cables where tension accuracy has direct safety implications, maintaining calibration currency is non-negotiable. Pilot John International operates an ISO 17025-accredited calibration laboratory capable of recalibrating Pacific Scientific T60 series tensiometers to original manufacturer specifications, issuing a fully traceable calibration certificate upon completion. Learn more about PJi's ISO 17025 Calibration Services →
| General Information | |
|---|---|
| Part # | T60-1001-C9-1A |
| Manufacturer | Pacific Scientific |
| Shipping Information | |
|---|---|
| Product Weight | 2 lbs. |
| Product Dimensions | 10.5 x 7.5 x 3 in. |
| Schedule B | 9027893500 |
| ECCN | EAR99 |
| Specifications | |
|---|---|
| Accuracy | ±5% of indicated reading or one minor division, whichever is greater |
| Cable Construction | 7x19 stranding; MIL-DTL-83420 flexible aircraft cable |
| Cable Gauge | Built-in integrated cable diameter gauge |
| Cable Grip | 3-point positive grip prevents dislodgement on free-hanging cable |
| Cable Sizes | 1/8", 3/16", 7/32", 1/4" |
| Calibration Reference | Serialized calibration bar included (serial-matched to instrument) |
| Indicator Type | Black Dial Indicating — direct reading, no chart conversion |
| Manufactured | USA |
| Operating Temperature | -65°F to 160°F (-53°C to 71°C) |
| Operation | Fully mechanical — no batteries or electronics required |
| Pointer Lock | Yes — push-button pointer lock |
| Risers Required | None — no alternate risers for any supported cable size |
| Tension Range | 150 – 450 lbs |
| USAF Equivalent | Type C9 |
| Warranty | 1 Year (new units) |
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AIRCRAFT COMPATIBILITY
This item is for use on all aircraft.
PRODUCT REVIEWS
QUESTIONS & ANSWERS
The T60-1001-C9-1A provides an accuracy of ±5% of the indicated value or one minor division, whichever is greater. To achieve maximum precision, technicians are advised to take three to five readings at slightly different points along the cable and average the results.
Calibration should be performed annually or whenever the instrument shows signs of deviation. The included calibration bar provides a quick check to verify accuracy; full calibration requires loading known weights on different cable sizes. The calibration reading must fall within ±2% of the load marked on the calibration bar’s identification tag.
Each T60 tensiometer includes a dedicated calibration bar marked with a serial number that matches the unit's serial number. By clamping the instrument on the bar and comparing the dial reading with the bar’s tag value, users can confirm measurement accuracy. Any reading outside the ±2% range indicates the need for recalibration.
The T60-1001-C9-1A is designed to operate accurately within a temperature range of -65°F to 160°F (-53°C to 71°C). This wide range allows reliable operation in extreme environmental conditions, such as cold ramp areas or heated maintenance hangars.
No. The T60 series is a durable precision instrument and is not damaged by tension loads exceeding its rated scale. However, operators should avoid intentional overloads to maintain calibration accuracy and extend the service life of the internal spring mechanism.
Routine maintenance is minimal. The instrument should be kept clean and stored in its protective case when not in use. The only lubrication required is a light wipe of Dow Corning #33 grease (or NATO G-395 equivalent) on specific pins and bearings after repairs or disassembly.
The handle latch secures the actuating handle when the instrument is not in use. During tension measurement, the latch is released to allow the handle to close gently on the cable. Operators must avoid letting the handle snap open, as this can cause mechanical wear or injury to the operator.
Yes, but the cable diameter setting must include the outer coating thickness. For example, a 5/32” cable with insulation measuring 7/32” in total diameter should be preset to 7/32” before measurement. This ensures the gauge measures the actual cable tension, not just compression from the coating.
In tight or low-visibility spaces, the pointer lock allows technicians to “freeze” a tension reading and view it after removing the tool. This feature enhances accuracy and safety during inspections of congested control cable assemblies, such as those found in tail or wing sections.
When not in use, the T60-1001-C9-1A should be stored in its padded carrying case to protect it from dust, moisture, and mechanical shock. The carrying case is fitted with custom foam inserts and includes a calibration bar holder to maintain the instrument’s alignment and calibration integrity.
Before every use, the serial number on the instrument’s nameplate should be confirmed to match the serial number stamped on its calibration bar tab. This ensures that each tensiometer is paired with its specific calibration reference for consistent readings.
Yes. The manufacturer, Opti Manufacturing (OEM of Pacific Scientific tensiometers), provides a one-year warranty on new units. The warranty covers defects in materials and workmanship under normal use but excludes damage from dropping, tampering, or misuse.
The T60-1001-C9-1A covers 150–450 lbs on cable sizes from 1/8" to 1/4". The T60-1001-C8-1A covers 10–200 lbs on a wider range of cable sizes from 1/16" to 1/4". The C9-1A is the right choice when primary control cable tensions exceed 200 lbs; the C8-1A covers lighter and mid-range cable systems. Shops working on large aircraft with high-tension primary cables often keep both models on hand.
No. Like all T60 series instruments, the C9-1A requires no alternate risers for any of its supported cable sizes. The built-in cable diameter gauge identifies the cable size directly on the instrument, and tension is read straight off the dial face.
It is calibrated for standard flexible multi-strand aircraft control cables conforming to MIL-DTL-83420 with 7x19 strand construction, covering 1/8" through 1/4" cable diameters. It is not suitable for non-flexible cables conforming to MIL-DTL-87161 unless recalibrated for that cable type.
Each unit ships with a serialized calibration bar matched to the instrument's serial number. Clamp the instrument on the bar and compare the dial reading to the tag value. A reading within ±2% confirms the instrument is in specification. If outside that range, contact PJi's calibration lab for recalibration service.
