We recently acquired a large inventory of overstock items. These items are missing the manufacturer’s original packaging. They may also have minor cosmetic blemishes from storage (See Photos).

Product Classification: This is a heavy-duty industrial and marine Aero Tach 4-Pole AC Tachometer Generator manufactured by Consolidated Instrument & Avionics.
Model Identification: Cataloged under exact manufacturer part number 2CM7-187.
Technical Specification Code: Built to comply with factory specification protocol 5510-2 (also listed on equipment stamps as 510-2).
Electrical Output Profile: Generates an alternating current rating ranging from 9 to 26 VAC @ 40 OHM.
Engineering Standards: Manufactured to fully meet and comply with rigorous SAE - AS404B instrument performance specifications.
Operational Drive Speed: Features a design profile optimized for a 1250 RPM configuration.
Physical Weight: Built with a rugged, self-contained metal chassis assembly weighing exactly 2.6 lbs.
Primary System Role: Attaches directly to a standard mechanical tachometer accessory drive pad to function as a mechanical-to-electrical sensor that feeds real-time RPM voltage data to analog gauges.