EXPERIENCED MODELERS KNOW that the only way to be sure if you have enough charge left to safely get in that last-minute flight is with an accurate digital voltmeter. In fact, most experienced modelers won’t go to the field without one. Another indispensable field accessory is a tachometer, which is used to check and compare engine performance, set needle valves, and conduct various other performance functions. Now Hangar 9 has consolidated these two field accessories into one convenient, compact unit. A great combination, Hangar 9’s new Digital Voltmeter and Tachometer (DVT™) combines a digital voltmeter with a built-in load for 4- and 5-cell receiver packs and a 9.6-volt transmitter pack with a tachometer that accurately reads in 10 rpm increments for 2-, 3-, or 4-bladed props.