Swift Optical 478 Altimeter/Barometer Weather Instrument, 0 to 15,000' Range, 2-1/16" x 1-15/16" Size
Swift optical ingeniously designed, this miniature instrument has an adhesive backing which may be used to fasten it to your dashboard. This is three instruments in one: An automobile altimeter; A hiking altimeter; A aneroid barometer with a dial calibrated in inches of mercury. It is 2-1/16-inches by 1-15/16-inches. Range: zero to 15,000 feet.
