Vintage Thommen Classic Swiss mechanical pocket altimeter/barometer with analog feet and barometric-pressure scales. This high-quality Swiss instrument features a 19-jewel mechanical movement, black protective housing, adjustable calibration control on the reverse, and a red Fairview Knights neck lanyard. Thommen Classic models were designed for mountaineering and outdoor use and were produced in both metric and feet versions. Exact accuracy has not been professionally calibrated or verified, so it is being sold as a vintage instrument/collectible unless otherwise tested.

• Thommen Classic mechanical altimeter/barometer
• Made in Switzerland
• Feet scale
• Approximate range: 0–21,000 ft
• Barometric scale in inches of mercury
• 19-jewel mechanical movement
• Analog dial
• Black protective housing
• Rear adjustment/calibration lever
• Red Fairview Knights lanyard included
• No original box, paperwork, or leather case shown
• Vintage Swiss precision instrument
• Sold exactly as pictured