A gage block with an exaggerated flatness
error is illustrated in foldout-11. You can see
of the optical flat because this portion of the
gage block and optical flat ________ ________ are
_______ and are _______ to each other.
In most instances, the exaggerated condi-
tions of foldout-11 do not exist. In some in-
stances the mating surfaces will not have a
________ ________to produce evenly spaced bands.
In some instances the mating surface will not be
__________ . Therefore, the bands will not be
When you compare the flatness errors at A,
B, and C in foldout-13 with the errors at D, E,
and F, you will realize that the ______ ______
at the top exist because the surfaces are
______ , and those at the bottom exist because
the surfaces are _________ .
to be the same; However, they were produced
by different types of surfaces. One surface
is ____________ and the other is ____________.
To determine the ________ in the _________
of the two blocks in foldout-14, you will use
The second optical flat application is the
determination of the height and/or the _________
in the _______ of two blocks.