An Altimeter is a device that takes advantage of barometric tension or GPS to ascertain altitude. It provides serious-time readings and helps in calculating the speed of ascent or descent. Contact the company to obtain a quote or maybe a selling price The one two negatives I've at this time https://arthureyasq.dailyblogzz.com/32440830/an-unbiased-view-of-aircraft-altimeter-for-sale