Peter apian posters & prints

Measuring the altitude of the Sun, 1539 Unknown

Using astrolabes to calculate the height of a steeple, 1539 Petrus Apianus

Telling time at night using a nocturnal, 1539 Unknown

Reiner Gemma Frisius, Dutch astronomer, geographer, cartographer and mathematician, 1539 Unknown

Astronomicum Caesareum, 1540 Peter Apian