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Instruction manual for MH & MH+M
58
11 DETERMINATION OF THE PROBE CONSTANT
11.1 Masterpiece
Each height gauge is provided with a standard, also called master piece.
It is necessary to use this accessory with most of the measurement modes integrated in the MICRO-
HITE and MICRO-HITE+M height gauges.
Calibration with groove of the master
piece
Calibration with rib of the master
piece
The master piece has to be as clean as possible when it is used, as it is, to a large
extent, the measurement of this tool that will determine the accuracy of the
results obtained later.
In order to allow the user to carry out measurements without any time-consuming calculations, the
constant of the probing system is determined on the master piece, whose dimension is known. By
combining 3 standards of which it is constituted, it represents an internal or external dimension of
12.7 mm / .50000 in.
It is important to only use the master piece provided with the height gauge. TESA
do not guarantee correct functioning of the instrument if it is used with another
master piece than the one provided by default.
The final inspection and the certificate of the instrument both refer to this master
piece.
11.2 Concept
When measuring elements that require probing in two directions (for further details, see this
), it is necessary to take into account the probe constant.
Elements that require two probe hits: bore, axis, groove, rib