Jolly Logic - AltimeterTwo Impulse Will only work for model

Will only work for model rockets

Power button turns device ON/OFF and RESETs the display between flights

textured surfaces

Crowned edge to facilitate insertion into airframe

Jolly Logic - AltimeterTwo Impulse Will only work for modelAltimeterTwo is an instant flight analysis tool for model rocketry, no computer required. It is small enough to fit in most rockets, and it provides 10 key flight performance measures on its sunlight readable screen for each flight, including max altitude, top speed, engine thrust duration, peak acceleration, ejection timing, and total flight time. No batteries required. AltimeterTwo is rechargeable and includes a recharging cable that works in common