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Areas           SURVEYORS' SCALES          No. 5
Scale Vernier Unit Test Plate Ott's K.&E., No. 4230 Coradi's Compensating  
No. Ratio Linear Area Actual Relative Area Reading Setting Constant Setting Constant Setting Constant Setting Constant
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
No. Ft. Ft. In. Ft. Sq. In. Acres Sq. Ins. Acres Acres Units ½ mm Units ½ mm Units ½ mm Units ½ mm Units
  1 1:120 1 = 10 1 =   .002295 .01307 .00003     .03558 1186.1 277.1 17699   80.5 18274 277.1 23386 _ _ _ _ _ _ _ _
  2 1:240 1 = 20 1 =   .009182 .01307 .00012     .01423 1186.1 277.1 17699   80.5 18274 277.1 23386 _ _ _ _ _ _ _ _
  3 1:360 1 = 30 1 =   .02066 .01452 .0003     .32024 1067.4 305.5 17390   50.0 18163 308.6 22860 _ _ _ _ _ _ _ _
  4 1:480 1 = 40 1 =   .03673 .0136 .0005     .56931 1138.7 287.5 17569   69.2 18200 289.2 23155 _ _ _ _ _ _ _ _
  5 1:600 1 = 50 1 =   .057 .01218 .0007     .8835 1262.2 261.9 17954   97.3 18400 260.9 23814 _ _ _ _ _ _ _ _
  6 1:720 1 = 60 1 =   .08264 .01452 .0012   1.28092 1067.4 305.5 17390   50.0 18163 308.6 22860 _ _ _ _ _ _ _ _
  7 1:960 1 = 80 1 =   .14692 .0136 .002   2.2774 1138.7 28707 17569   69.2 18200 289.2 23155 _ _ _ _ _ _ _ _
  8 1:1200 1 = 100 1 =   .22957 .01307 .003   3.5583 1186.1 277.1 17699   80.5 18274 277.1 23386 _ _ _ _ _ _ _ _
  9 1:792 1 = 66 1 =   .1 .01 .001   1.55 1550 217.6 19221 145.3 19308 212.6 25795 _ _ _ _ _ _ _ _
10 1:1584 1 = 132 1 =   .4 .01 .004   6.20 1550 217.6 19221 145.3 19308 212.6 25795 _ _ _ _ _ _ _ _
11 1:2400 1 = 200 1 =   .91828 .01307 .012 14.23318 1186.1 277.1 17699   80.5 18274 277.1 23386 _ _ _ _ _ _ _ _
12 1:3600 1 = 300 1 = 2.066 .01452 .03 32.0045 1067.4 305.5 17390   50.0 18163 308.6 22860 _ _ _ _ _ _ _ _
13 1:4800 1 = 400 1 = 3.67312 .01307 .048 56.93272 1186.1 277.1 17699   80.5 18274 277.1 23386 _ _ _ _ _ _ _ _

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