INOTEST
3
The INOTEST is a mechanical, comparative measu-
ring instrument, for checking dimensions of large
workpieces. With the standard equipment, internal
sizes from 275 to 1035 mm and external sizes from
250 to 1010 mm can be measured. The INOTEST
comprises two main sections: the measuring head
and the extensions. The measuring head is fitted
with a sliding component, whose displacement can
The sensing cylinder
2
carried in the measuring
head body
1
is guided in ball bushings and is free to
move axially. At one end it carries the fixing clamp
3
for the measuring anvil
4
. The lever
6
is coupled to
the sensing cylinder, to give direct contact with the
dial gauge pushrod
5
and the spring component
7
,
which provides the measuring force. The position
of the spring component on the left or right deter-
1 DESCRIPTION
be read off on a dial gauge. The extensions are te-
lescopic and can be clamped to the measuring head
by screws. In use, the instrument is first assembled
to the length needed for the size to be checked, then
it is calibrated with the aid of a reference piece or a
gauge. The exact dimension is found by reading off
on the dial gauge the deviation from the calibrated
size.
mines whether the insturment is set for internal or
external measuring. The extensions of the INOTEST
can cover a very wide size rang, as the tube
9
carrying the supporting plate
10
and the anvil
11
slides in the body
8
can be locked in any position.
When assembled and calibrated to the required
dimension, the INOTEST forms a hand, lightweight
instrument for speedy, accurate measurement.
Fig. 1.
Fig. 2.
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6
7
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1
9
10
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