Follow these guidelines when abbreviating measurements:
As a general rule, do not abbreviate units of measure except as noted in the Table of abbreviations of measurements. However, if space is limited, as it might be in a table, the abbreviations in this table are all right to use without restrictions.
Abbreviations of units of measure are identical, whether singular or plural. For example, use in. for both 1 in. and 2 in.
When units of measure are not abbreviated, use the singular for quantities of one or less, except with zero, which takes the plural (0 inches).
Insert a space between the number and the unit of measure for all abbreviations.
Do not insert periods after abbreviations of measurements except for in. (inch), which always takes a period to distinguish it from the preposition in.
Microsoft style
In machine-translated content, use abbreviations of measurement with great care. Realize that abbreviations may be either mistranslated or not translated at all. For example, if you abbreviate points as pt, a Japanese version of the machine-translated content may have pt among all the Japanese characters, which may be confusing to the Japanese audience.
3.145.75.217