Vertical Speed Indicator LUN 1144 3-inch Vertical Speed Indicator Description: The vertical speed indicator (VSI) is precision instruments which provide an acurate and reliable indication of rate of change in altitude. Ascent is indicated by clockwise rotation of the pointer from zero. Descent is indicated by counter clockwise rotation. Zero is at the 9 o´clock position. Stops are incorporated to limit pointer movement at the end of the scale. All models are temperature compensated, and are provided with a zero adjustment screw located on the face of the case at the seven o´clock position. E-mail: [email protected] http://www.mikrotechna.cz/ http://www.mikrotechna.com/ Dial layout: standard in accordance with customer’s specification Environmental (Operating): Temperature: -30 °C to +55 °C (-22 °F to +131 °F) Humidity: 95% maximum at +50 °C (122 °F) Vibration: 5 to 55 Hz, 0.01 inch (0.25mm) max.; 55 to 500 Hz, 1.5 g max. VERTICAL SPEED Dimensions in inch (mm) Applicable Specification: Dial and Pointer: Installation: Lighting: TSO C8d Lustreless white on dull black background By means of four spring nuts and screws, or clamps alone Lighting is available upon request