Dimension Of The Part Is Known; Dimension Of The Part Is Not Known; Measuring Lengths Exceeding 56" (1400 Mm); Offset (Excentric) Measurements With Special Measuring Inserts - TESA UNITEST Mode D'emploi

5.2 After the measuring head has been calibrated,
Dimension of the part the required extensions are added. The difference
is known between the length of the complete instrument and
the length to be measured must be set by means of
5.3 Determine the approximate dimension by means
Dimension of the part of a calliper or a ruler. Screw together measuring
is not known head and extensions required. Place combination
in measuring position. Set the indicator to zero by
5.4 When dimensions exceeding 56" (1400 mm) are
Measuring lengths measured, it is recommended to use a special sup-
exceeding 56" port in order to avoid sagging which may lead to
(1400 mm) erroneous measuring results.
5.5 On request tungsten carbide inserts for excentric
Offset (excentric) (offset) measurements can be supplied, which can
measurements with be used instead of the standard inserts for centric
special measuring measurements.
inserts The centric measuring insert of the movable mea-
suring point is replaced by the excentric one by
screwing the latter in position by means of the
screwdriver.
The measuring insert of the fixed measuring point
and the point itself are a single unit. The centric
measuring insert is also replaced by the excentric
one.
5.6 If required a special device for measuring external
External measurement dimensions can be supplied. It is mounted on the
with special device UNITEST in the following manner:
the micrometer screw. The UNITEST is now placed
in the measuring position and the difference is read
on the dial indicator.
displacing the thimble. Read the measuring value
on the micrometer part and add the total length of
the extensions used to this value.
After the excentric measuring inserts have been
mounted the measuring head must be set as des-
cribed in chapter 4. For this setting operation it is
recommended to use the two supporting blocks
which are supplied with the two measuring inserts
for excentric measurements and to mount these on
the setting gauge.
These measuring inserts are 0.55" (14 mm) offset.
– Screw the holder with movable measuring point
to the backplate of the dial indicator by means
of the Allen key and replace the standard fixed
measuring point by the one intended for making
external measurements.
– Set measuring head on setting gauge as descri-
bed, this time the side for external dimensions.
UNITEST
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