ALLIED'S ELECTRONICS DATA HANDBOOK

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Mathematical Symbols

X or . or *

Multiplied by
or : or / Divided by

+

Positive, Plus, Add

-

Negative, Minus, Subtract
Positive or Negative, Plus or Minus

-/+

Negative or Positive, Minus or Plus

= or ::

Equals, Equal to
Identity

or @

Is Approximately Equal to
Does Not Equal, Not Equal to
> Is Greater Than
> > Is Much Greater Than
< Is Less Than
< < Is Much Less Than
Greater Than or Equal to
Less Than or Equal to
\ Therefore
Angle
D Increment or Decrement, Delta
^ Perpendicular to
Parallel to
n Absolute value of n
 
Mathematical Constants
   
   
   
   
   
   
   
   
   
   
 
Decimal Inches
  Inches X 2.540 =  Centimeters  
  Inches X 1.578 X 10-5 =  Miles  
  Inches X 103 =  Mils  
 
  Inches Decimal Equivalent Millimeter Equivalent  
  1/64     0.0156 0.397  
    1/32   0.0313 0.794  
  3/64     0.0469 1.191  
      1/16 0.0625 1.588  
  5/64     0.0781 1.985  
    3/32   0.0938 2.381  
  7/64     0.1094 2.778  
      1/8 0.1250 3.175  
  9/64     0.1406 3.572  
    5/32   0.1563 3.969  
  11/64     0.1719 4.366  
      3/16 0.1875 4.762  
  13/64     0.2031 5.159  
    7/32   0.2188 5.556  
  15/64     0.2344 5.953  
      1/4 0.2500 6.350  
  17/64     0.2656 6.747  
    9/32   0.2813 7.144  
  19/64     0.2969 7.541  
      5/16 0.3125 7.937  
  21/64     0.3281 8.334  
    11/32   0.3438 8.731  
  23/64     0.3594 9.128  
      3/8 0.3750 9.525  
  25/64     0.3906 9.922  
    13/32   0.4063 10.319  
  27/64     0.4219 10.716  
      7/16 0.4375 11.112  
  29/64     0.4531 11.509  
    15/32   0.4688 11.906  
  31/64     0.4844 12.303  
      1/2 0.5000 12.700  
  33/64     0.5156 13.097  
    17/32   0.5313 13.494  
  35/64     0.5469 13.891  
      9/16 0.5625 14.287  
  37/64     0.5781 14.684  
    19/32   0.5938 15.081  
  39/64     0.6094 15.478  
      5/8 0.6250 15.875  
  41/64     0.6406 16.272  
    21/32   0.6563 16.669  
  43/64     0.6719 17.067  
      11/16 0.6875 17.463  
  45/64     0.7031 17.860  
    23/32   0.7188 18.238  
  47/64     0.7344 18.635  
      3/4 0.7500 19.049  
  49/64     0.7656 19.446  
    25/32   0.7813 19.842  
  51/64     0.7969 20.239  
      13/16 0.8125 20.636  
  53/64     0.8281 21.033  
    27/32   0.8438 21.430  
  55/64     0.8594 21.827  
      7/8 0.8750 22.224  
  57/64     0.8906 22.621  
    29/32   0.9063 23.018  
  59/64     0.9219 23.415  
      15/16 0.9375 23.812  
  61/64     0.9531 24.209  
    31/32   0.9688 24.606  
  63/64     0.9844 25.004  
      1.0 1.000 25.400  

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