Specifications
MIMTD-1472E
5.5.5.12 Word spacing. Space between words shall be not less than the width of one character.
5.5.5.13 Line spacing. The minimum space between lines shall be one-half character height.
5.5.5.14 Size vs luminance. The height of letters and numerals shall conform to Table XII.
5.5.5.15 Character height and viewing distance. See Table XII.
TABLE XII, Label size versus luminance
MARKINGS
HEIGHT1
3.5
Cdhd (1 ft—L)
o
VE
3.5 cd/m2
OR BELOW
(1 ft-L)
Critical markings with position variable (e.g.
I
(0.2P4Y in)
I
3-5 mm
numerals on counters)
(0.12-0.20 in)
Critical markings with position fixed (e.g.,
I
4-8mm
2.5-5 mm
numerals on fixed scales, controls and switc
0.16-0.31 in)
(0.10 -0.20 in)
markings, or emergency instructions)
Noncritical markings (e.g., identification
1.3—5 mm
1.3—5 mm
labels, routine instructions, or markings
(0,05-0.20 in)
(0.05-0.20 in)
m@red only for familiarhtion)
1. . .
--- .-- . . . . . . -.. .
. . . . .
‘ values assume a I lu mm (u m,) wewmg astance. l-or other thstances, multip~ythe above
values by D/710 mm (D/28 in.).
5.5,6
IMuipment labeling.
5.5.6.1 Units, assemblies, subassemblies and T.)arts.
5.5.6.1.1, General mxtuhements. Each unit, assembly, subassembly and part shall be labeled
with a clearly visible, legible, and meaningfi.d name, number, code, mark or symbol, as applicable.
5.5.6.1.2 Location. The gross identifyhg label on a uni~ assembly w major subassembly shall
be located externally in such a position that it is not obscured by adjacent items; on the flattest, most
uncluttered surface available; or on a main chassis of the equipment.
5.5.6.1.3 Terms. Equipment shall be labeled withterms descriptive of the test or meamuvment
applicable to theh~~ints (e.g.,
“demodulator” rather than “crystal detector” or “power amplifier”
rather than “bootstrap amplifier”).
5.5.6.2 Controls and displays
5.5.6.2.1 Gc~cr_@~gguJcmcnt:. Controls and disp!q’s shai! bc qq-mprimly md cle:w!y
MxJcd with the basic information needed for proper identification, utilization, actuation, or
man]pulatmn ot the element.
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