Review on 🏔️ Sun Company Altimeter 203: Battery-Free Altimeter and Barometer, Weather-Trend Indicator with Rugged ABS Case and Lanyard, Reads Altitude 0-15,000 ft by Matthew Perez

This is a very good product that can serve as both a primary gauge and a secondary backup gauge for measuring weather conditions and altitude. Used to calibrate the Kestrel Digital Anemometer, an altitude and barometric pressure instrument also available on Revain.com. (With the fine tuning/calibration of this device, could it also work differently as a Kestrel or as a digital device?) Only gave 4 stars because the face is actually a bit difficult to read in good light, especially for those who wear glasses, doesn't glow in the dark, and even in An anti-ballistic case also needs to be "rubberized" to absorb shock if dropped or e.g. B. is pushed into a backpack, a shooting bag or a cargo jacket pocket. Also, the dial is a little tricky to manipulate, as you have to push your fingers into the shatterproof case - a better design would be if the dial went through a ballistic case or some sort of little switch. Despite the above, as far as one can tell, very accurate and serious users, such as the US military, tourists, hikers, climbers, hunters. and those who love the Van Life RV lifestyle should really consider it as a "survival" tool in case of loss of all communication, loss etc! Or for those operating in regions of the world, the weather can change rapidly and dramatically. The good thing about many analogue/purely mechanical devices is that they require no special batteries or only a few special batteries, have potentially high maintenance costs, and are very difficult to "hack" and potentially reveal their location and other relevant information. unless it is clearly not desired! Also, they are generally very difficult to fake remotely!