Up for sale is a vintage Haga Altimeter / Hypsometer, made in Germany and originally used by the University of Wisconsin Zoology Department (course 152). This precision optical instrument was designed to measure tree height, elevation, or slope distance in forestry and field biology.

The Haga altimeter uses a rotating scale and sight window to provide direct-reading height measurements from fixed baseline distances (typically 15, 20, 25, or 30 meters/yards). No batteries are needed—it’s a purely mechanical and optical device built for rugged fieldwork.

This particular piece is marked:

“Univ of Wis. Zoology 152”

indicating it was part of a university teaching or research kit, adding both history and provenance.

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🔍 Features

• Manufacturer: Haga, Germany

• Function: Altimeter / Hypsometer for forestry and surveying

• Finish: Black metal body with knurled grip

• Markings: “Univ of Wis. Zoology 152” – hand-painted

• Origin: Germany

• Operation: Mechanical (no batteries required)

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📏 Condition

• Good overall condition with expected cosmetic wear from age and use.

• The scale markings are legible.

• The optical sight appears clean and functional.

• No cracks or major damage.

• University marking is intact and clearly visible.

(Please see all photos for details of condition.)

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🎓 Background

Haga altimeters were widely used in forestry, surveying, and field biology through the mid-20th century. They remain collectible for their engineering quality and are still useful in hands-on teaching and demonstration of traditional field measurement techniques.