User Manual

PREDICTOR

SETTING AND OPERATION

INTRODUCTION

SETTING YOUR BAROMETER

30 Samuel Barnett Boulevard

New Bedford, MA 02745

(508) 995-2200

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 intial setting to accomodate the natural mechanical break-in

of the device by simply repeating the setting procedure.

SCREW

WOOD

PANEL

SCREW

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.

We recommend mounting the read-out on

one of our pre-drilled and centered panels.

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PREDICTOR 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.
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PREDICTOR 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. Next, move the settable pointer until it rests exactly over the movement pointer.
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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.