VINTAGE AIRGUIDE BAROMETER compensated, wheel

Description

VINTAGE AIRGUIDE BAROMETER compensated, wheel. Condition is "Used". Shipped with USPS Priority Mail.
I used this for awhile till I bought a more accurate barometer.  I tested it and it is almost accurate as my current accurate barometer, which is a good news for me.  lol.
The back is almost 5 inch across.  I do not know the exact year this was made or the exact model.  it is well used but no rust or damage.
Also include instructions for home weather forecasting.