Estes® Altimeter

ok i am giving it a three because I bought it for my science experiment at school and I was told to do the tests in December to February. So i chose the "Estes Astrocam model rocket" i put it in the rocket hit the record button and launched it then tried to recover the data but was not successful. I have concluded it does not work in cold weather due to the amount of pressure in the atmosphere.

Worked great for me:)

an amazing altimeter for the price