30 x 42 in (75 x 107 cm)
ID #101462
1950 1955 250-500 Chart 26. Light charts educational foot-candle meter industrial industry information informative institutional instructional invention inverse lenses light mirrors Original 1955 periscope product reflection refraction schools science scientific size-29-5x42 slick coating on surface; dimensions may vary slightly with each by about a 1/4 inch telescope US United States vintage poster W. M. Welch Manufacturing Company
Macintosh
USA, 1984
Pathe Marconi
France, c. 1960s
Calor Radiateurs Electriques
Rick Sammon Sandisk
USA, 2005
Star Trek 1976
USA, 1976
Semaine de l'Agriculture 1961
France, 1961
