Provided with a manometer composed of 4 copper-beryllium aneroid capsules for reference 4011 (precision: +/- 0.6 hPa), and 2 copper-beryllium aneroid capsules for reference 4111 (Precision: +/- 1 hPa).
Operates by mechanical clockwork movement (7 days) or battery powered quartz clockwork movement (7 days, 31 days).
Provided with a fast barometric value adjustment system depending on its location and the time.
Provided with a sheet metal cover and a light alloy base coated with Epoxy paint, a safety lock, and a tamperproof reset device.
Delivered with 100 diagrams, one pen and a battery (1.5 V for quartz movements).