Anatomy of a signal
Not as complex as it might look. Ten groups of measurements, 9 are taken
in cm. Only the first measurement of overall height and width are in inches.
Using this "G"
U-229 first
measure
overall height
and width. In
this case it is
"4" x 2.9""
1.
2.
More often than not
the skirt is the widest
measurement. In this
case the wire ridge
measurement just
needs to be converted
to cm.
3a.
Third take 2 measurements for
the wire groove. At the
narrowest point inside the
groove measure it's diameter.
Second measure the height of
the groove.
3b.
" 4" x 2.9 "
7.4 cm
1.2 cm  x  5.8 cm
4.
5.
6.
7.
8.
9a.
9b.
10.
Fourth is the skirt
height. Measured
from the bottom of
the skirt to the lower
edge of the wire
groove.
Fifth is the total pinhole
depth. From pinhole top to
longest measurable pount
on skirt or petticoat (if
petticoat rested).
Sixth is the depth
of just the threads
themselves.
Seventh measure
the depth to the
first thread from
the farthest point
on skirt (or
petticoat if petticoat
rested).
Eighth measure the
depth of the
skirt-to-petticoat
groove.
First measure the
inner diameter of
the petticoat.
Next measure
the distance
from the
petticoat to the
skirt.
Lastly, measure
the distance from
the inner
petticoat to the
outer skirt.
This page is currently being built. Eventually there
will be more/better pics for seeing measurements
demonstrated. The chart on the right is what I use for
U# comparison along with silhouette transparencies.
3.7 cm
8 cm
5.5 cm