marposs M1 Star MBG, Instruction Manual, Page: 8 / 58

2
ASSEMBLY AND
ZERO
-
SETTING OF
INDICATOR
8
MARPOSS MECHANICAL/ELECTRONIC INDICATORS
In order to complete the bore gauge, it is necessary to assemble the display dial and to
follow the quick set-up procedure described below, which is suitable only for indicators
with Marposs characteristics.
SET-UP
WITH
TD1, TD10, TD1P
AND
QUICK DIGIT INDICATORS
1. By means of the A/F 16 mm wrench (fig. 1-A), or a 2 mm hexagonal wrench (fig. 1-
B) loose the ring nut “1” and manually unscrew the indicator-holder until extraction
from the handle.
2. By means of the hexagonal-end 2 mm wrench, insert and lock the indicator in the
relevant indicator-holder (*) at the following distances:
•
7 mm A-distance (fig. 2) in case of standard indicator holder-handle;
•
until its stopped (A= 0 mm) in case of mini indicator holder-handle;
3. Apply the bore gauge to the zero-setting master (see fig. 3).
4. Re-insert in the handle the indicator-holder unit, manually screw it so as to notice at
least a 500 mm shifting of the indicator pointer (for models TD1, TD10 and Quick
Digit). For the TD1P model the indicator pointer has to be within the ±30 mm range,
in order to be sure to retrieve the ZERO by means of the mechanical potentiometer.
5. Firmly apply the 27mm A/F wrench (**) to the seat of the plug gauge handle “2”,
and lock the ring nut “1” using the 16mm A/F wrench (see fig. 4) or the 2mm
hegagonal wrench.
NOTE
:
The indicators, since they are not components of the plug gauge, are not assembled,
but placed within the package.
(*) The 3/8’’ indicator-holder require the extension “B” included, to be placed
between the indicator rod and the gauge contact (see fig. 6).
(**) If the mini handle is employed it is required to use the 15mm A/F wrench.
2 A/F
27 A/F
16 A/F