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INTRODUCTION

Inside the brass barometer case is a sealed, flexible metallic drum. As the atmospheric pressures changes,
the drum is compressed or expanded. This change is transmitted through linkage to a pointer - thus, change
in atmospheric pressure is evidenced by movement of the pointer around the dial. The linkage has a
bimetallic element which automatically compensates for changes in temperature which would otherwise introduce
an error in barometer readings.
PROTEUS
SETTING AND OPERATION

SETTING YOUR BAROMETER

Your barometer has been carefully calibrated and tested at the factory and
needs but one simple adjustment before installation at your location. This
adjustment is made by inserting a screw driver in the recessed slotted screw
at the back of the barometer and turning this screw to the proper setting.
The simplest method of obtaining the correct barometric pressure for your
location is to consult the local weather bureau, airport or perhaps a nearby
individual with a correctly set barometer.
Due to the nature of aneroid (mechanical) barometers it may be necessary
to fine tune the initial setting to accomodate the natural mechanical break-in
of the device by simply repeating the setting procedure.
WOOD
PANEL
SCREW
We recommend mounting the read-out on
one of our pre-drilled and centered panels.
30 Samuel Barnett Boulevard
New Bedford, MA 02745
(508) 995-2200
SCREW
SCREW

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Summary of Contents for Maximum Proteus

  • Page 1 PROTEUS SETTING AND OPERATION INTRODUCTION Inside the brass barometer case is a sealed, flexible metallic drum. As the atmospheric pressures changes, the drum is compressed or expanded. This change is transmitted through linkage to a pointer - thus, change in atmospheric pressure is evidenced by movement of the pointer around the dial. The linkage has a bimetallic element which automatically compensates for changes in temperature which would otherwise introduce an error in barometer readings.
  • Page 2 PROTEUS HELPFUL COMMENTS Your barometer is a useful instrument for weather prediction. The settable pointer, controlled by the knob in the center of the glass lens, is used to show changes in atmospheric pressure. When reading your barometer, lightly tap the case to take up normal slack in the linkage.
  • Page 3 IMPORTANT ADDITIONAL INFORMATION Components: Along with the indicator, the following components are included with this instrument: Brass Case: Your brass case is solid brass A70-30 Holloware quality, with a durable lacquer finish. It is in fact a piece of jewelry and should be treated as such. It should be cleaned at least once a week to keep airborne pollutants (dust, etc…) and any moisture from collecting on the case thereby attacking the lacquer.

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