Jolly logic altimeter ONE - digital display - up to 9000m 35mm making them suitable for slightly

making them suitable for slightly heavier rockets and improved altitude control

Scratch-building your own recovery system

Recovery is by parachute

water and oxygen

Jolly logic altimeter ONE - digital display - up to 9000m 35mm making them suitable for slightlyHighly accurate 19 bit barometric pressure sensor can detect altitude changes of less than one foot Sunlight readable LCD display displays maximum flight altitude New: History feature stores last 1000 flights Advanced rechargeable Lithium Polymer battery Recharges in less than 2 hours from any standard USB port (cable included) Highly accurate pressure sampling 25 times second Power button turns device ON OFF and RESETs the display between flights