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Micro Digital Tachometer by Hanger 9.
The Hangar 9 Micro Digital Tachometer is engineered using the latest technology. This handy tuning tool can measure the rpm of any engine equipped with a 2-, 3-, or 4-bladed propeller. RPM is displayed in up to four digits, with a range of up to 32,000 rpm. A long lasting 3V 220mAh lithium battery is included.The Micro Digital Tachometers auto shut-off feature prolongs battery life, and a low-battery icon indicates when the battery needs to be changed. It's also small enough to easily fit into your pocket.
- Handy, pocket-sized tachometer
- Works with 2-, 3- and 4-blade propellers
- Simple, one-button operation