This is a high-quality, vintage mechanical drive extension or ratio adapter designed for speedometer or tachometer cables. It features a heavy-duty shielded black housing and precision-machined threaded ends. One end features a clear/translucent knurled adjustment dial with numerical markings (Visible: 2, 4), suggesting this tool was used for fine-tuning the rotation ratio or as a diagnostic interface for instrument calibration.
Placement on Vehicle: Transmission / Instrument Cluster
Product Features: Knurled Adjustment Dials, Shielded Cable, Threaded Ends
Intended Use/Discipline: Automotive Repair, Speedometer Calibration, Vintage Restoration
Drive Type: Mechanical / Rotating Cable
Color: Black / Silver
Finish: Matte Black Housing, Machined Metal Ends
Key Features:
Precision Dial: Includes a numbered knurled knob for manual adjustment or indexing.
Durable Construction: Heavy-duty casing designed to withstand engine bay heat and vibration.
Mechanical Integrity: Smooth rotation of internal drive shaft (cable).
Threaded Fittings: Standard male/female threaded ends for easy integration into existing mechanical gauge lines.
Vehicle Types: Vintage trucks, classic cars, agricultural machinery, or marine vessels using mechanical (non-electronic) speedometers.
Thread Pattern: Appears to be standard 7/8" or 5/8" automotive threading (Verify with calipers before listing).
Condition:
Used : Pulled from a working environment.
Photos show the exact item you will receive.
Please review all images for condition and included components.
No additional parts or accessories are included unless shown.