Specifications

CATEGORY STYLE GUIDE: CONSUMER ELECTRONICS

Appendix A

Numbers

Write "one" through "nine" and "first" through "ninth" as words; write "10" through "999,999" and "10th" through "999,999"

as numerals.

If a sentence or paragraph includes both numbers below 10 and more than 10 that refer to the same thing, express both

in numerals; for clarification on this, see Chicago Manual of Style 8.8. Example:

 The recipe calls for 5 to 10 eyes of newt.

Write ages of people as numerals. Example:

 An 8-year-old boy.

In product descriptions, it is permissible to begin sentences with numerals, but spell out numbers that begin a sentence

(or recast) in an Amazon.com review.

When a number begins with a zero before a decimal, please delete the zero (.139, not 0.139).

Always use numerals with units of measurement. Examples:

 This item weighs in at 4 pounds.

 The LCD screen is 2.5 inches wide.

Note: The measurement of time is an exception to this rule (one-hour battery).

Use a hyphen with whole number/fraction combinations. Examples:

 114 1-1/2-inch pipes

 cable up to 5-1/4 inches long

 ...range from less than 10 to 20 watts

Per Chicago Manual of Style, adjectival compounds comprising a number and a unit of measure are hyphenated before

the noun. Examples:

 1/4-inch fiber

 20-by-27-inch LCD screen (Note the use of by instead of x, per Chicago Manual of Style.)

 to 2-inch interconnects (In running copy, spell out to instead of using a hyphen.)

 measuring 113 by 2 inches

 the cabinet hold shelves at 90 and 45 degrees

 16-cubic-inch capacity

When numerals are used and the units of measure are abbreviated, hyphens are omitted before the noun (per Chicago

Manual of Style Table 6.1):

 323 amp motor

5 ohms capacitor

At the end of Electronics descriptions, style measurements as follows (the order of the dimensions can be changed):

 Measures 20 x 10 x 12 inches (length x width x height).