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
VARA 50 Jaar De Stem Van Je Hart
Netherlands, c. 1975's
Sapeur Pompier de Paris
France, c.1970's
Avec garde-corps & plinthe tu peux travailler sans crainte
France, c.1950's
Luuli virran olevan katkaistun eipä ollutkaan! Lukitse katkaisija, niin olet varma!
Finland, c.1930's
Katso kuinka lyöt!
En koskaan enää käy avojaloin tyssä! #2
Finland, 1929
