PKG08804-UM128 9
ENGLISH
128 COMBINATION HEAD AND
MASTER USAGE INSTRUCTIONS
The 128 Combination Head and Master is designed
to be used with the 128 End Rods and Extension
Combinations as supplied in the 128 Inside Micrometer
Set. It combines the linear setting ability of a long
range micrometer with the ease of readability of a
precision dial indicator.
To be used, the combination head (indicator and
micrometer assembly) must be set to the exact
size specified on the setting master. To do so,
the micrometer is set at the 1" (25 mm) setting
(micrometer mid-range) and firmly locked.
The combination head is now properly placed in the
setting master and the entire assembly placed upright
such that the micrometer measuring end points upward.
The micrometer end of the combination head is now
swept or rocked in two directions (fore and aft as well
as from side to side) and slightly rotated to obtain a
MAXIMUM reading on the dial indicator. See Fig. 1.
The small hand of the indicator should read zero while
the large hand should read either zero, plus or minus
in accordance with the sense and magnitude of the
actual size marked on the setting master.
For example
: A master marked 10.0005" (250mm)
should cause the indicator small hand to read zero
while the large hand should read PLUS .0005"
(.01mm). A master marked 9.9995 should cause the
indicator small hand to read zero while the large hand
should read MINUS .0005" (.01mm).
Summary of Contents for 64381
Page 1: ...Trust Is In The Name User Manual PKG08804 UM128 ...
Page 3: ...PKG08804 UM128 3 128 INSIDE MICROMETER WITH STANDARD MICROMETER HEAD USER MANUAL ...
Page 6: ......
Page 14: ......
Page 22: ......
Page 30: ......
Page 38: ......
Page 46: ......
Page 54: ......
Page 62: ......
Page 64: ...Starrett com ...