Chart 26 Light

W. M. Welch Manufacturing Company
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 medium mirrors Original 1955 periscope product reflection refraction schools science scientific 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

More from $250 to $500