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.
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...
