Look at foldout-15. In the construction of
the ___________ shown, the legs are joined by the
ring at the top. The ______ on each of the cali-
pers are spread apart by means of an ___________
equipped with a calibrated scale. Although the
it is generally called a ____ _________________
You can see from A in foldout-17 that the
_____________ of a screw is the _____________
from the top of one of its _________ to the top
of an _________ thread. This pitch will remain
constant for any pair of adjacent threads.
From the preceding problem it should be
clear that the product of the pitch (0.025 inch)
and a specific number of turns (40) will move
the end of the screw a predetermined distance of
Although the ratchet stop shown in foldout-
18 is turned to produce motion in small incre-
ments, the _______ _______ does not move forward
or backward along the axis of the spindle.
The precision screw (spindle) has 40 threads
per inch. This means that the pitch of the
screw and the movement of the spindle and thimble
is _______ inch for each complete revolution of
the _____________ .