HP TextEngineer Technical Writing Guide - Manual (Page 27)

Company Writer's Guide
[For Illustration Only] B-12
Symbols for Units in General Use (Cont’d)
Unit Symbol Notes
metric ton t 1 t = 1,000 kg. The name tonne is used in some
countries for this unit, but use of this name in the
USA is deprecated (see ANSI Z210.1-1976).
mho mho Formerly used as the name of the siemens (S).
micro μ SI prefix for 10 -6 .
microampere
μA
microfarad
μF
microgram
μg
microhenry
μH
microinch μin
microliter
μL
See note for liter.
micrometer
μm
micron
μm
Deprecated. Use micrometer.
microsecond
μs
microwatt
μW
mil mil 1 mil = 0.001 in.
mile (statute) mi 1 mi = 5280 ft
mile per hour mi/h Although use of mph as an abbreviation is
common, it should not be used as a symbol.
milli m SI prefix for 10 -3
milliampere mA
millibar mbar Use of the bar is strongly discouraged in ANSI
Z210.1, except for limited use in meteorology.
milligram mg
millihenry mH