Dillon X Force Gauge - Manual (Page 12)

12 Model X Mechanical Force Gauge User Instructions
Introduction
2.4 Operational data
Your Dillon Force Gauge is ready to go to work for you without any special assembly.
Upon removing it from the storage case, it is only necessary to check the zero setting.
1. Place the unit on a flat table with the pressure button, #4, at the top.
2. The dial bezel, #3, is locked lightly by a knurled thumb screw, #10. Loosen the
knurled screw and turn the bezel in either direction, depending upon which
way zero may be off. Revolving the bezel causes the dial to follow.
3. With zero positioned directly under the pointer tip, tighten the locking screw
(see CAUTION below) and the instrument is ready to use.
Because of the sensitivity of the Dillon Gauge, zero should always be set with the unit
resting on the lower or thicker portion of the deflection beam as illustrated. This is the
same position it occupies during calibration. Ordinarily, zero will be retained indefinitely.
However, under repeated stress or through accidental banging around, it may go off
slightly. Thus, it is a good plan to check zero occasionally.
2.5 Helpful pointers
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Occasionally test the tightness of the hardened dial indicator plunger, #6.
This part is screwed into a finely threaded seat and may sometimes work
loose. This would cause the gauge to read high and might be mistaken for
an off zero condition. Be sure not to force the plunger tip too tightly when
screwing it down since, as explained, the threads are fairly delicate and
might break off.
WARNING: Never pick up the force gauge by the dial indicator. This will cause
loss of calibration accuracy, loss of operation or non-warranty damage.
CAUTION: When adjusting bezel locking screw, #10, only tighten as much as is
necessary to hold bezel in proper position. DO NOT OVERTIGHTEN, as this will
distort the thin housing of the dial indicator gauge and affect the smooth action
of the movement and produce false readings!
CAUTION: The small anvil, #6, against which the dial indicator plunger rides,
should never be altered except by factory technicians. This anvil has nothing to
do with zero setting. By careful adjustment, it has been positioned in such a
way that, for full load application within the range of the instrument, the pointer
will revolve 360°. TAMPERING WITH THE SETTING OF THIS ANVIL
AUTOMATICALLY VOIDS THE ACCURACY GUARANTEE. If the anvil should be
accidently thrown out of position by dropping or striking against another
object, the entire gauge should be returned to the factory for resetting and
calibration check.