• Transcribe
  • Translate

Eccentricity of the Sextant by Frederic Furbish, 1893

Eccentricity of the Sextant by Frederic Furbish, 1893, Page 3

More information
  • digital collection
  • archival collection guide
  • transcription tips
 
Saving...
Explanation of the Photographs. a = revolving disc containing colored glasses. b. = [tube?] of the telescope. c.c.c. = arc. d = vernier tangent screw e = '' clamp screw f = index arm. g.g.g = frame h.h. = handle j = index arm axis k = prism axis l = shade glass axis m = telescope axis n = '' collar o = shade glasses p = prism q = index glass r = vernier reading glass. s = ground glass vernier shade t.t.t. = graduated silver strip. v = vernier x = movable arm of vernier shade A = "house" B = bottle C = basin. D = case.
 
Scholarship at Iowa