Mechanical Variometer, Vane Type, Model: 5 StVL 5-3 - Logarithmic Scale - Sensitive

• 80 mm (3 1/8")
• ±10 knots
• Logarithmic scale
• 1.6 second response time

Note: the 0.9 Liter capacity flask (or 2 x 0.45 L flasks) are not easy to fit into many sailplanes - so this is not a popular option.

Application
With its logarithmic scale, the 5 StVL combines the advantages of a precision variometer with those of a standard variometer.  In the precision range from 0 to ±2 knots the graduations are equal to 0.2 knots.  From ±2 knots to the end of the scale the instrument is a standard variometer.  The needle travels farther in the low lift/sink range than in high lift/sink range - giving you more information when you need it in weak lift.
Note: Since the scale is not linear, this variometer cannot be used with a MacCready ring.
Technical Data
Same as the 5 StV vane type variometer, Requires the use of a W-9015 0.90 L Capacity Flask or 2 x W-9014 0.45 L Capacity Flasks
Weight: 0.220 kg (7.8 oz), weight with W-9015 0.90 L capacity flask: 0.51 kg (1.12 lb)
Includes W-9015 0.90 L Capacity Flask
Installation and Maintenance Instructions