Christopher Polhem Poster
Christopher Polhem was a Swedish scientist, inventor and industrialist.
The mechanical alphabet was the name he gave to collection of wooden models that demonstrated simple principles for motion conversion and which was used in teaching. 

This poster was made for Gotland Poster.
Christopher Polhem Poster
350
2500
8
Published:

Christopher Polhem Poster

Christopher Polhem was a Swedish scientist, inventor and industrialist. The mechanical alphabet was the name he gave to collection of wooden mod Read More
350
2500
8
Published: