Specifications

5.2.3.2.2
5.2.3.2.3
5.2.3.2.3.
MIL-STD- 1472E
Orientation. Numbers shall be oriented in the upright position.
Circular scales.
1 ScaIe reading and Winter movement. The magnitude of the scale reading shall
increase with clockwise movement of the pointer.
5.2.3 .2.3.2 Zero POsition and direction of movement. When positive and negative values are
displayed around a zero or a null position, the zero or null point shall be located at either the 12or
9 o’clockposition. The magnitude of positive values shall increase with clockwise movement of the
pointe~ the magnitude of negative values shall increase with counterclockwise movement.
5.2.3 .2.3.3 Scale break. There shall bean obvious break of at least 10° of arc between the two
ends of the scale, except on multirevolution instruments such as clocks.
5.2.3 .2.3.4 Number of minters Whenever precise readings are required not more than two
coaxial pointcm shall be mounted on one indicator face.
5.2.3 .2.3.5 Pointer alimrnent. When a common, stible value exists for given operating
conditions in a group of indicators, the indicators shall be arranged either in rows so that all pointers
Iine up horizontally on the 9 o’clockposition under normai opemting conditions or in columns so that
all pointers line up vertically in the 12 o’clock position under normal operating conditions. If a matrix
of indicators is needed, preference shall be given to the 9 o’clock position.
5.2.3 .2.3.6 Relative Dositionof sude marks and numbers. When nxding time and accuracy are
critical, de markings and location of aasociatcd numbers shall be arranged to prevent pointers from
covering any portion of the scale marks or numerals, and scale marks shall be on or close to the plane
of the pointer tip to avoid visual pamliax. If readout accuracy is not critical (i.e., gross relationship
between the pointer and number is all that is required), an arrangement of numerals inside the scale
annuius maybe used. (See Figure 3).
5.2.3.2.4 Curved (arc), horizontal stmkh~ and vertical straight scales.
5.2.3 .2.4.1 Scale readimi and tminter movement. The magnitude of the scale reading shall
increase with movement of the pointer up or to the right.
5.2.3 .2.4.2 Zero rxxition and direction of movements. When positive and negative vaiues are
displayed around a zero point, the magnitude of positive values shall increase with movement of the
@*wmtOtifigM, ~&m@* d%@vevdw W~
with movement of the
pointer down or to the left.
5.2.3.2.4.3~ofm
inters. Pointers shall be located to the right of vertical scales and at
the bottom of horizontal scales.
5.2.3 .2.4.4 I%acementof numerals. Numerals shall be placed on the side of the graduation
marks away from the pointer to avoid having numbers covered by the
r
inter. ?f space is limited (for
curved or arc scales) numerals may be placed inside of graduation mar s to avoid undue constriction of
the SCilk.
5.2.3 .2.4.5 Pomt~_@rnent. When a common, stable value exists for given operating
condmons m a group ot mdlcatom, they shd! be arranged aher m rows so chatall pointers Armup
l)ori70nt;dlv (for vertical scales] or in columns s{}thal all pointers line up Vcflically(for h~~i~n[a]
wales )