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Volumes           NUMBERS OF BRICK IN SEWERS, WALLS, ETC.          No. 10
Scale Vernier Unit Test Plate Ott's K.&E., No. 4230 Coradi's Compensating  
No. Linear Area No. Brick Actual Relative Area No. Brick 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 17
No. In. Ft. Sq. In. Ft. No. Brick Sq. In. Cu. Yds. Sq. Ft. No. Brick Units ½ mm Units ½ mm Units ½ mm Units ½ mm Units
  1    1/16 = 1 1 = 256.0 1 = 4736.0 .1478 70.0 3968.0 73408.0 1048.7 310.1 17372 44.6 17823 314.0 22781 _ _ _ _ _ _ _ _
  2    1/8   = 1 1 =   64.0 1 = 1184.0 .01351 16.0   992.0 18352.0 1147 285.6 17601 71.3 18212 287.2 23200 _ _ _ _ _ _ _ _
  3    3/16 = 1 1 =   28.4444 1 =   526.15 .0152   8.0   440.83   8155.59 1019.55 318.3 17281 35.7 18170 323.1 22705 _ _ _ _ _ _ _ _
  4    1/4   = 1 1 =   16.0 1 =   296.0 .01351   4.0   248.0   4588.0 1147 285.6 17601 71.3 18212 287.2 23200 _ _ _ _ _ _ _ _
  5    3/8   = 1 1 =     7.1111 1 =   131.55 .0152   2.0   110.25   2039.1 1019.55 318.3 17281 35.7 18170 323.1 22705 _ _ _ _ _ _ _ _
  6    1/2   = 1 1 =     4.0 1 =     74.0 .01351   1.0     62.0   1147.0 1147 285.6 17601 71.3 18212 287.2 23200 _ _ _ _ _ _ _ _
  7    5/8   = 1 1 =     2.56 1 =     47.36 .01478     .7     39.68     734.08 1048.7 310.1 17372 44.6 17823 314.0 22781 _ _ _ _ _ _ _ _
  8    3/4   = 1 1 =     1.7777 1 =     32.874 .0152     .5     27.54     509.59 1019.5 318.3 17281 35.7 18170 323.1 22705 _ _ _ _ _ _ _ _
  9 1         = 1 1 =     1.0 1 =     18.5 .01351     .25     15.5     286.75 1147 285.6 17601 71.3 18212 287.2 23200 _ _ _ _ _ _ _ _
10 1 1/2   = 1 1 =       .4444 1 =       8.222 .0152     .125       6.888     127.44 1019.5 318.3 17281 35.7 18170 323.1 22705 _ _ _ _ _ _ _ _
11 2         = 1 1 =       .25 1 =       4.625 .01351     .0625       3.875       71.6875 1147 285.6 17601 71.3 18212 287.2 23200 _ _ _ _ _ _ _ _
12 3         = 1 1 =       .1111 1 =       2.055 .0146     .03       1.722       31.8602 1062 306.5 17383 48.5 18159 310.1 22829 _ _ _ _ _ _ _ _
13 6         = 1 1 =       .0278 1 =       0.5137 .01362     .007         .4304         7.9623 1137.5 286.4 17479 69.0 18193 289.6 23155 _ _ _ _ _ _ _ _
Note.-- In all cases the section measured is taken as being 1 foot in length or thickness.

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