This section is from the book "A Practical Workshop Companion For Tin, Sheet Iron, And Copper Plate Workers", by Leroy J. Blinn. Also available from Amazon: A Practical Workshop Companion For Tin, Sheet Iron, And Copper Plate Workers.
= Sign of Equality, and signifies as 4 + 6 = 10. | ||||
+ | " | Addition, | " | as 6 + 6 = 12, the Sum. |
- | " | Substraction, | " | as 6 - 2 = 4, " Remainder. |
X | " | Multiplication, | " | as 8 X 3 = 24, " Product. |
÷ | " | Division, | " | as 24 ÷ 3 = 8 or 24 3 = 8. |
√ | " | Square Root, | " | Evolution or Extraction of |
Square Root. | ||||
62 | " | to be Squared, | " | thus 82 = 64 Involution, or |
73 | " | to be Cubed, | " | thus 38 = 27 the Raising of |
Powers. | ||||
 
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