Dwyer Instruments Wind Speed Indicator

This Dwyer Instruments wind speed indicator operates on the time proven principle of aircraft speed indicators

Item #: 166457 Manufacturer: Dwyer Instruments Manufacturer Item #: Mark II

	List Price:		$111.95

Features & Applications:

Perfect for your living room, den, workshop or office. Instruments are accurate, low-cost and practical. Standard model indicates wind speed directly on liquid filled scale reading in both Miles per Hour (0-80) and Beaufort scale (1-12). Molded white plastic instrument has gold tone scale, 7-3/8"W X 5-5/8"H X 1-1/8"D. Includes ABS plastic vane, 50' tubing, mounting hardware and gage oil.

The Dwyer Mark II Wind Speed Indicator is 100% pneumatic. It operates on the time proven principle of aircraft speed indicators. The complete kit consists of a pick up vane connected by fifty feet of flexible double column tubing to the Mark II Indicator, plus all necessary mounting hardware, fluid and instructions. In operation, wind aligns the Mark II weather vane pointing the pick up tube into the wind. Wind pressure enters and is transmitted through plastic connecting tubing to red fluid inside the indicator. Fluid level rises and falls in response to changing wind speed. Scale calibrations on the indicator show the wind speed corresponding to various fluid levels. For wind direction, observe the weather vane position. other structures. A minimum of 5 to 10 feet of clearance is recommended for mounting above small or medium sized buildings and 15 to 20 feet for large buildings. Attach the mounting bracket directly to the pole or television antenna tower with the hardware provided. It will not interfere with T.V. reception. Assemble the roof top unit as shown in diagram on page 3. Use the curved slot to adjust the pick up unit to a vertical position. Tighten all screws. Make sure weather vane rotates freely.

Specifications:

Velocity (FPM):	0 to 80
Includes:	50 feet of vinyl tubing