Aircraft airspeed indicator EA517X-PTL series

analog

These true speed indicators are differential pressure indicators that measure the difference between static and total pressure produced by ram air from the pitot. The indicated airspeed can be corrected for changes in altitude by turning the knob to align the outside air temperature with the altitude. The moveable airspeed scale will then show the actual, or true, airspeed. General Height: 3.25" Width: 3.25" Depth: 2.40" (max) Weight: 0.8 ± 0.1 lbs. Nomenclature: Matte white Dial Face: Flat black Typical Range (see Note 3) Outer: - 40 to 200 MPH Inner: - 40 to 170 Knots Range Markings (see Note 3) White Arc: 0.10" wide Green Arc: 0.10" wide Yellow Arc: 0.10" wide Red Line: 0.03" x 0.275"