1950s German Barometer Porcelain Dial F*S Hermes knob replacement The Zephyr system was intended

The Zephyr system was intended for technical artists doing things like machine parts diagrams and architectural drawings

Adler J2 - J4 Manual Typewriter owner's manual This is a downloadable PDF and a high-quality digital photo-scan of an Adler J2 - J4 manual

commercial office typewriter designed for the student - home user - or small business

The Slide Rule is an instrument for facilitating calculations and is an indispensable aid not only to the engineer and scientist with their involved problems

1950s German Barometer Porcelain Dial F*S Hermes knob replacement The Zephyr system was intended1950s German Mid Century modern barometer. Very nice condition, glass and porcelain gauge face are in excellent shape, very minor wear on wood edges and some fading on the top of the brass. This is a compensated barometer, made in West Germany and is not influenced by temperature Measures 7 1 2"diameter X 2 " deep. Great for hanging on wall with original hanger. Classic Mid Century Modern Style!!!!!