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Vertical Speed Indicators

Vertical Speed Indicator - Model LUN 1141

       The vertical speed indicator (VSI) is precision instrument, which provides an accurate 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. The instrument is mainly suitable for use in sailplanes because of its minimal lag.

Specification and Model Designation

Technical drawing - variant

Vertical Speed Indicator - Model LUN 1144

       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.

Specification and Model Designation

Technical drawing - Standard

2 inch Vertical Speed Indicator - Model LUN 1184

       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.

Specification and Model Designation

Technical drawing  - ARINC