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49

| 1mm on [[drahen Smith]] = 2.717 = 
|   163.02
|     25.4
|     ----
|    65208
|   81510
|  32604
|   ________
|24/4140.708   172.529 = 
|   24          1 turn c.s.miera
|  ----
|   174
|   168   228    345.058
|   ----  216    ---------
|     60           11.502 = 
|     48
|     ---
|      127
|      120
|      ----
|        70
|        48     Lug. 1.06077
 ------------------------------------------------------------


Meas. of x&y copied from Micrometer Book no. 17. pages 39 & 40
Plate I 10559. January 4, 1899. 
           x       y.
  +21˚1618 55.834  60.082    2986 7 23 40.59 +21 12 31.9 9.2
      1626 53.192  54.633    
      1629 49.551  56.669    2997 7 24 58.65 +21 22 3.5  8.2
      1616 58.553  61.930    2980 7 23  6.72 +21 7  19.7 8.9
      1620 55.059  57.699
      1614 59.774  63.648    2977 7 22 51.39 +21 2  27.9 7.7
      1610 65.033  60.533    2969 7 21 47.19 +21 11 35.6 8.3
       D2  56.421  59.218

Diff.x  -0.587 (-3.229) -6.870  +2.132 (-1.362)+3.353  +8.612
Log. ,,  9.76864        0.83696  0.32879        0.52543 0.93510
         1.09116        1.09116  1.09116        1.09116 1.09116 
     ------------     ---------- --------       ------- --------
        10.85980        1.92812  1.41995        1.61659 2.02626
          7.24            84.75    26.30         41.36   106.23