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Lesson 1
Part I
GAGE BLOCK MATERIALS AND CONSTRUCTION
20
square rectangular
21 Parallelism is a necessary feature of a
with a
gage block. A gage block dimension cannot be
hole in
used as a reference standard unless its gaging
the
surfaces are _____________________.
center
38
39 Just as the gage block surfaces must be
flat
flat, they must be parallel. This is not a
new idea. In our previous discussion we con-
cluded that gage block surfaces must be_______
and ______________.
55
56 We have discussed three items which you
soft
will need to clean rust proof grease from gage
tissue
blocks.
gage block cleaner
remove
These items are
grease
_______________________
________ ___ ________ __________
____________ ____________ _____________
75
76 Moisture from the hands contain corro-
dimensions
sive salts. If handling the block is an abso-
change
lute necessity, handle the block lightly on two
accuracy
sides so that the __________ __________ in the
moisture from the ___________ will not damage
the blocks.
95
96 It doesn't matter whether we call them
surfaces
_____________ surfaces or ____________surfaces,
their function remains the same.
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