Two Vertical Sundials, the brass example for latitude 41 degrees, 30 minutes, with hinged sights, silvered month scale with sliding indicator, applied plates marked Hours Before Noon and Hours After Noon and a stamped Equation of Time Chart on the reverse, 6 3/4 by 4 3/8 in., the other in aluminum stamped G.E.R. and Lat. 41, with calendar and hour scales in Arabic numerals, 5 5/8 x 2 7/8 in.
Two Vertical Sundials, the brass example for latitude 41 degrees, 30 minutes, with hinged sights, silvered month scale with sliding indicator, applied plates marked Hours Before Noon and Hours After Noon and a stamped Equation of Time Chart on the reverse, 6 3/4 by 4 3/8 in., the other in aluminum stamped G.E.R. and Lat. 41, with calendar and hour scales in Arabic numerals, 5 5/8 x 2 7/8 in.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
