Measures altitude from 0 to 18,000 ft. in six revolutions.
Calibrated in 20-ft increments.
Accurate to within 40 feet over entire range.
Measures sea level pressure from 28.7 to 31.3 inches.
Barometric pressure calibrated in 0.05 inHg increments.
16 jewel shock-resistant temperature-compensated movement.
Counter dial keeps track of needle revolutions.
Housed in rugged metal case, including strap.
Size: 2 3/4 x 2 5/8 x 7/8 inches
Weight: 3.5 oz.
Made in Germany