Vintage HONEYWELL Barometer Weather Temperature Humidity - 8.5x2x4" Black Metal

Description

HONEYWELL
Desk/Tabletop Barometer
Black Metal Casing, Silver Face, Clear Plastic Cover (has some surface scratches)
measures approx. 8 1/2" x 2" x 4"
I've had it in the house and the garage and it is working but temperature seems to be running high.  I believe the holes in the back are for resetting its accuracy.  Someone with more knowledge than I would know how to set it.  I don't have instructions.
Sold as is
It is in very good used condition.  Kind of a cool item with a modern look.
Any questions, please message me.  Thanks for looking!