Moving the decimal point in either direction in N requires moving it in the OPPOSITE direction in body of table (see p. 26).

Moving the decimal point in either direction in N requires moving it in the OPPOSITE direction in body of table (see p. 26).

Explanation of Table of Reciprocals (pp. 24-27).

This table gives the values of 1/N for values of N from 1 to 10, correct to four figures. (Interpolated values may be in error by 1 in the fourth figure.)

To find the reciprocal of a number N outside the range from 1 to 10, note that moving the decimal point any number of places in either direction in column N is equivalent to moving it the same number of places in the opposite direction in the body of the table. For example:

Moving the decimal point in either direction in N requires moving it in the OPPOSITE direction in body of table (see p. 26).

CIRCUMFERENCES OF CIRCLES BY HUNDREDTHS (For circumferences by eighths, see p. 32)

Explanation of Table of Circumferences (pp. 28-29)

This table gives the product of times any number D from 1 to 10; that is, it is a table of multiples of π. (D= diameter.)

Moving the decimal point one place in column D is equivalent to moving it one place in the body of the table.

Circumference = X diam. = 3.141593 X diam.

Conversely,