Opti Manufacturing T5-8003-107-00 Aircraft Cable Tensiometer (100–800 lb)

The Pacific Scientific T5-8003-107-00 is the upper high-range model in the T5-8003 sub-series, calibrated for primary flight control cable tension measurement from 100 to 800 lbs on 3/16", 7/32", 1/4", and 5/16" cables. It sits above the T5-8003-106-00's 600 lb ceiling and below the T5-8003-108-00's 1000 lb upper limit — covering the mid-to-upper high-tension zone where transport-category aircraft, large military platforms, and heavy rotary-wing systems specify their primary control cable tensions on the largest standard cable diameters. Built on the T5-8003 Ref C platform — the heaviest and most structurally robust frame in the Pacific Scientific T5 line — it features the mitten-grip design that allows full one-handed operation at extreme tension ranges even while wearing heavy gloves or service mittens in cold-weather environments.

The Mid-to-Upper High-Tension Zone — Where Large Aircraft Primary Cables Live

The T5-8003 sub-series spans 40 lbs to 1000 lbs across three models, and the T5-8003-107-00 owns the middle of that range: 100–800 lbs. Its cable size coverage — 3/16", 7/32", 1/4", and 5/16" — is focused on the four largest standard aircraft cable diameters, where primary flight control tensions on transport-category and heavy military aircraft are most commonly specified above 400 lbs. The 1/8" and 5/32" cable sizes are not covered on this model; programs requiring both small and large cable coverage in the 40–600 lb range should consider the T5-8003-106-00 instead. The calibration card T597-107 covers the primary 3/16"–1/4" cable range, with the supplementary Table 6-1 within the card providing the 5/16" cable reference readings. The riser configuration is Riser #2C for 3/16"; Riser #3 for 7/32" and 1/4"; and Riser #3A for 5/16" — confirm all riser selections against the calibration card before every measurement. Zero temperature error means accuracy is unaffected by ambient conditions, and the instrument is ready for immediate use in any environment.

Ref C Mitten-Grip Platform — Precision at Extreme Tension

• 100–800 lb range — the upper high-tension zone in the T5-8003 sub-series; above the -106-00's ceiling, below the -108-00's floor
• Four large cable sizes — 3/16", 7/32", 1/4", and 5/16"
• Ref C mitten-grip platform — heaviest T5 frame; purpose-built for high-tension cable work and cold-weather heavy maintenance
• Calibration card T597-107 — primary calibration plus supplementary Table 6-1 for 5/16" cable and 1/4" cross-reference
• Riser set: #2C, #3, #3A — matched to cable size per calibration card; confirm selection before every measurement
• Zero temperature error — calibration-stable from -53°C to 71°C, no adjustment required
• Pointer lock brake lever — retains reading before removal in confined or overhead access areas
• One-handed mitten-grip operation — operable at extreme tension ranges with heavy gloves
• No batteries or electronics — fully mechanical, always ready

Technical Specifications

• Tension Range: 100 – 800 lbs (all supported cable sizes)
• Cable Sizes: 3/16", 7/32", 1/4", 5/16"
• Riser — 3/16": Riser #2C
• Riser — 7/32", 1/4": Riser #3
• Riser — 5/16": Riser #3A (see T597-107 Table 6-1)
• Series Platform: T5-8003 Ref C — mitten-grip design; heaviest T5 platform
• Calibration Card: T597-107 (primary + supplementary Table 6-1 for 5/16" / 1/4" cable)
• Indicator: Black dial indicating
• Temperature Stability: Zero temperature error; operates from -53°C to 71°C
• Pointer Lock: Yes — brake lever rod
• Origin: Made in the USA
• Warranty: 1 year on new units

Typical Applications

• Transport-category aircraft primary flight control cable tension verification in the 100–800 lb range
• Large military aircraft with 3/16"–5/16" primary control cables specified above 600 lbs
• Heavy rotary-wing platforms with high-tension primary cable specifications in the upper range
• Cold-weather heavy maintenance requiring mitten-grip operation at extreme tension levels
• MRO facilities maintaining large transport and military aircraft needing the -107-00's 100–800 lb calibration profile
• Post-repair and return-to-service verification on large-diameter, high-tension primary cable systems

Pacific Scientific T5-8003-107-00 Calibration

The T5-8003-107-00 should be recalibrated on a scheduled basis — annually at minimum, and immediately following any overload event, mechanical shock, or drop. At tensions up to 800 lbs on primary flight control cables, even a small calibration deviation represents a significant absolute error — maintaining calibration currency at this range is especially critical to safe rigging outcomes on large aircraft. Pilot John International operates an ISO 17025-accredited calibration laboratory capable of recalibrating Pacific Scientific T5-8003 series tensiometers to original manufacturer specifications, issuing a fully traceable calibration certificate upon completion. Whether your maintenance program operates under FAA oversight, a DOD contract, or an ISO 9001 quality management system, PJi's lab delivers the traceability and documentation your compliance requirements demand. Learn more about PJi's ISO 17025 Calibration Services →