Falcon Gauge light weight altimeters feature nonsensitive on 3-18″ single pointer, and with a barometric window. A setting knob allows the pilot to set the correct field elevation or barometric pressure setting. They are weight conservative, economical, yet very precision and accurate, providing excellent altitude measuring capabilities: designed for ultra light airplanes. Standard types are available in feet reading with barometric window inches of mercury or millibars reading; or meters reading with barometric window millibars reading. Weight 10.7 oz.