MIL-DTL-87268D
3.3.4.3 Nomenclature. Nomenclature used for names of equipment item assemblies, parts, etc., shall be in
agreement with the approved nomenclature list prepared as part of the supportability analysis records or other
oficial maintenance speciication, as applicable. Use of this nomenclature or its substitution with a standard
shortened identiier (i.e., acronym, common name) shall be consistent throughout the entire IETM and among
all IETMs which apply to the weapon system or equipment involved. If speciied by the acquiring activity,
standard shortened identiiers shall be substituted at all times when no confusion will result (see 6.2f).
3.3.4.3.1 Nomenclature for tools and test equipment. The oficial nomenclature shall be used in
the irst occurrence in a task or procedure, for all titles, parts lists, support/test equipment lists,
consumable/expendable lists, and work unit codes. When a common name exists for the same item, it
may be used in place of the oficial name. Oficial and common name usage shall be consistent, as
described above, throughout the IETM (see 3.3.4.7).
3.3.4.3.2 Nomenclature for controls and indicators. Controls and indicators identiied in a procedure shall be
identiied exactly as placarded on the equipment. Component reference designators e.g., R105, C56, etc. shall
be omitted unless the reference designator itself appears on the equipment or if two or more controls/indicators
have identical nomenclature. If variations in panel or chassis nomenclature exist, a comment explaining that
the panel nomenclatures are typical and may vary slightly from one unit to another shall be included.
Controls and indicators with functional names only (no panel names) shall be identiied by functional name.
3.3.4.4 Abbreviations. Use of abbreviations (including abbreviations for common units) shall be held to
a minimum. Standard abbreviations shall be in accordance with ASME Y14.38. Each abbreviation
shall be deined in the IETM glossary.
3.3.4.5 Unit of measure. Unit of measure shall be consistent throughout the IETM. If not otherwise
speciied on the equipment, measurements shall be in U.S. standard units (ounces, pounds, gallons, inches,
feet, knots, miles, etc.). Units of measure shall be used as follows:
a. Temperature readings as marked on the equipment. If other than Fahrenheit, the equivalent in
Fahrenheit shall follow parenthetically. General ambient temperature references, such as room
temperature, shall be given in degrees Fahrenheit.
b. Speed, distance, and meter readings as marked on the equipment. When the metric system is
used on the equipment, conversion to U.S. standards of measurement shall follow in parentheses.
If speciied by the acquiring activity, conversion of U.S. standards of measurement to metric
standards of measurement shall follow in parentheses (see 6.2g).
c. Switch positions and panel markings exactly as marked on the equipment. However, symbols on
panel markings, such as the symbols for "ohm" or "ininity," may be spelled out in textual
references when they cannot be produced by the presentation system.
3.3.4.6 Numerical expression of tolerances. The optimal value shall be expressed, along with associated
tolerances, e.g., 15 ± 1.25 VDC, or 15 ± 1¼ VDC, for numeric measurement values. Tolerances shall not
be expressed in percentages. All numerical values given shall match the number of decimal places indicated
on the affected instruments. Torque measurement values shall conform to the calibration of the required tool.
3.3.4.7 Vocabulary (permitted words). If speciied by the acquiring activity, words used in the text of the
IETM shall be limited to those contained in "permitted word lists" (see 6.2h). Words initially used by the
IETM author, which are not on these lists, shall be eliminated and replaced with permitted words, unless the
comprehensibility of a given passage requires the use of a "non-permitted" word. Non-permitted words shall
be approved by the Government. Terminology shall be consistent throughout the IETM, i.e., the same
word for a given component shall be used throughout the IETM.
3.3.5 General style requirements for graphics. Graphics for IETMs shall be developed in accordance with
the general style requirements of the following paragraphs as they relate to individual graphics or to
associations of both graphics and text. The requirements of these paragraphs shall apply to the display of
the IETM on the least capable device i.e., smallest screen which is speciied for use with the weapon
system or equipments to be supported by the IETM (see 6.2i).
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