44
45
In the preceding frames, figures, and fold-
air gap = /2 N
= 11.6 X 3
outs, the expressions air gap, air gap wedge, or
= 34.8 micro inches
distance between mating surfaces have been used.
You should understand that in all cases these
expressions represent flatness error. (No res-
ponse required.)
51
straight
52
Look at foldout-11. The interference bands
are ______ because the gage block mating surface
evenly
is _______. The interference bands are _________
_________ because the gage block mating surface
spaced
has a _________ slope.
59
More
60
The interference bands at A and B in fold-
out 12 are not ______ ______ because the surface
Bands
of the piece under measurement has a ___________
which is not _________ .
66
increase
67
In addition to the _______ in the _______ of
away
interference bands, the shift of the ________ of
point
__________ at B has caused a change in the
contact
__________ between _____________ __________ .
74
flatness
75
The optical flat application which we are
about to discuss can be called height or refer-
error
ence dimension measurements. However, we will
not use the long term reference dimension meas-
urements, we will refer to the application as
_____________ measurements.
82
width
83
If 1/2 of the light source used in fold-
standard
out-14 is 11.6 micro inches, the difference in
distance
the heights of the two blocks is ________ micro
leading
inches.
edge
leading
edge
50
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