MIL-M-18012B
which shall be between 0.8 and
otherwise specified by the pro-
1.1 of the height.
curing activity.
(2) Width: The width of the numer-
(c) Stroke width: The stroke width of
als shall be the same as the
numerals shall be between 0.020
height, except that the "1"
and 0.025 inch. The stroke width
shall be one stroke in width and
of the letters shall be between
the "1" shall be one stroke
0.025 and 0.030 inch.
width wider.
3.2.2.3 Radio call numbers. Transillumi-
(3) Stroke width: The stroke width
nated radio call numbers shall conform to the
shall be from 1/8 to 1/16 of the
size requirements specified in 3.2.2.1.
numeral height.
(4) Numeral spacing: The spacing
3.2.2.3.1 Non-transilluminated radio call
between numerals shall be one-
numbers and other similar markings shall
half the width of the numerals,
be between 0.188 and 0.375 inch high, having
except for the "1" and "4"
a width of between 0.9 to 1.1 of the height
which shall be decreased and
and a stroke width between 0.030 and 0.040
increased to conform with the
inch.
height and width requirements
3.2.2.4 Controls. The letters and numerals
specified above.
for transilluminated and non-transillumi-
(5) Color: Numerals on counters shall
nated aircrew station controls shall conform
be white on a black background.
to the size requirements specified in 3.2.2.2.
3.3 Miscellaneous.
3.2.2.5 Marking arrangements. In those
3.3.1 Checkoff lists. The lettering of per-
places where a plastic lighting plate larger
manently mounted checkoff lists shall con-
than 100 square inches is required. two or
form to the requirements specified herein.
more plastic lighting plates shall be used.
The items shall be restricted as specified in
The arrangement of markings on any of the
MIL-STD-203 and shall be listed vertically.
control panels shall be such that errors of
association of one marking or set of mark -
3.3.2 Visual warning flags. Warning flag
lettering shall be at least as large as the
ings with adjacent ones shall not be possible.
smallest letters on the display and the edge
Markings shall be spaced to avoid a cluttered
of the flag shall be at least 0.06 inch from
appearance. The space between the bottom
the letters. Flags shall be located on the dis-
of a row of letters or numbers and the top
play in SUCh a position that. when presented,
of the next row of letters or numbers shall
they will obscure the function to which they
be at least 1/8 inch. A 1/16 inch border area
on any- control panel shall be free of mark- -
apply without affecting the readability of the
remainder of the display. Nomenclature and
ings.
color on the flag shall besubject to the
3.2.2.6 Miscellaneous markings. For all
approval of the procuring activity.
classes and type of control panels. instru-
3.3.3 Colors. All colors specified in this
ments, and irdicators, special markings, such
specification shall be in accordance with the
as those used for a fuel-flow diagram (figure
color numbers of Federal Standard No. 595.
3), shall be Subject to the approval of the
Unless otherwise specified, the color numbers
procuring activity.
for the colors shall be as follows:
3.2.3 Counter displays.
NUmber
Color
(a) Numerals:
36231
Gray
37038
(1) Height: The height of numerals
Black
37875
Insignia white
on counters shall be between
33538
Orange-yellow
0.20 and 0.30 inch, except as
8
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