CONTENTS:
The shipping box should include the following:
1 wood compass base
1 aluminum support rod
1 polymer weather vane
1 Allen screw
1 Allen wrench 1/8"
1 lock nut
1 red tube sleeve
1 black locking block
1 self-tapping screw
ASSEMBLY:
Insert the aluminum support rod into the center hole on the face of the compass base. The flat or squared end of the rod will insert into the wood, and the narrow tip of the rod should be pointed upward. Next, hold the black locking block and the red weather vane. Place the flange of the weather vane underneath the lip of the locking block and slide both parts down the aluminum support rod until the red tube sleeve seats completely into the locking block. If seated correctly, you will see a thin red line from the tube sleeve. Spin the weather vane to ensure that it's not rubbing against the lip of the locking block. If friction is noticed, then push up slightly on the tube sleeve and spin again. If satisfied with the position of the locking block, use a small screwdriver to secure the locking block with the included self-tapping screw.
To disassemble, remove the self-tapping screw and slide the locking block upward. The red tube sleeve should remain in place. Do not remove the red tube sleeve unless necessary.
ATTACHING A WIND METER:
The WeatherFlow WEATHERmeter (sold separately) is the only approved wind meter for attachment to the Crosswind Compass.
Thread the Allen screw with the lock nut into the top of the weather vane. The tapered end of the lock nut and the Allen screw’s opening should be in the upward position pointing away from the weather vane.
Thread the wind meter onto the Allen screw. Do not overtighten; only finger tight. Finger tight means to tighten with two fingers. Now look at the position of the wind meter in consideration of whether it is properly oriented to face directly into the wind. If the wind meter has revolved past its proper position, you will need to shorten the Allen screw. If the wind meter has not revolved far enough, you will need to lengthen the Allen screw.
To adjust the length of the Allen screw, remove the wind meter and Allen screw from the weather vane. Set the weather vane and weather meter to the side and take hold of the Allen screw with lock nut. With the left hand, clamp the lock nut with plyers or vice-grips, but not too tight. With the right hand, insert the 1/8” Allen wrench into the Allen screw. Slowly turn the Allen wrench in a clockwise direction to shorten the Allen screw, and turn it in a counterclockwise direction to lengthen it. Make small adjustments, less than a quarter turn at a time.
After the adjustment, thread the Allen screw into the weather vane, and thread the wind meter onto the Allen screw until it meets resistance (finger tight). Check the position of your wind meter to ensure it's positioned to face the wind. If not, remove the Allen screw and wind meter from the weather vane and make another adjustment.
USE:
Establish the direction of your line of fire. Identify your shooting position and the target. The target, or point of aim, is at the 12 o’clock position.
Place the Crosswind Compass either directly behind you or to your side. Be sure there is no barrier, including yourself, between the oncoming wind and the Crosswind Compass. For best results, place the Crosswind Compass on a tripod about waist level or higher.
If it needs to be stationed at a distance from your shooting position, ensure the Crosswind Compass is parallel to the line of fire. Properly orient the compass at your shooting position with the 12 o’clock inscription pointed toward your target. Then move the Crosswind Compass laterally (left or right) to its new position so that the 12 o’clock inscription is parallel to the line of fire.
Observe the wind vane for about 60 seconds to identify the prevalent wind direction, in degrees, blowing across your line of fire.
Obtain the wind speed at your location. The preferred means to obtain your wind speed is with a wind meter (anemometer). The Crosswind Compass contains a threaded insert to attach a small wind meter to the top of the weather vane. If you don’t have a wind meter, you can use a weather app that gives the wind speed of your location, or you can estimate the speed by observing features in the environment such as leaves, trees, vegetation, mirage, wind socks, or wind flags. Remember, these secondary means are not as precise as a wind meter.
The next step is to obtain the crosswind component (x-wind comp). The crosswind component is computed by multiplying wind speed (mph) by the sine of the angle that corresponds to the weather vane. Notice the equation that is printed on the face of the Crosswind Compass: x-wind comp = wind mph x sin angle. Underneath the equation, you will see a list of numbers showing the actual sine of each respective angle.
For example, a 10-mph wind coming from the left at 30 degrees is calculated as follows: x-wind comp = 10 (mph) x .50. Therefore, the x-wind comp = 5 mph. Insert a wind of 5 mph with a wind angle of 90 degrees into your ballistic app. A 15 mph wind coming from the right at 45 degrees equals a x-wind comp of 10.5 mph. Insert a wind of 10.5 mph with a wind angle of 90 degrees into your ballistic app. The crosswind component will always be associated with a 90 degree angle.
For a wind coming from the left or right at 90 degrees, there is no calculation. You simply insert the wind speed into your ballistic app. For wind coming from the 12 o'clock and 6 o'clock positions (0 degrees), you simply enter 0 mph into your ballistic app.
CARE AND MAINTENANCE:
The Crosswind Compass is made as robust as possible. However, weather vanes are typically lightweight in order to quickly respond to the wind. Therefore, handle your unit with care to ensure that it doesn’t drop or otherwise fall to the ground. Placing a wind meter (anemometer) on top of the weather vane will make it top-heavy, so be careful when attaching and detaching the weather vane to prevent it from inverting and falling to the ground. The only approved wind meter for attachment to the Crosswind Compass is the WeatherFlow WEATHERmeter.
The Crosswind Compass has a clearcoat protective finish to provide limited protection against water, dirt, or scratches caused by ordinary use. To clean the unit, disassemble it and apply soap and water to a sponge or cloth and gently wipe the surfaces by hand. Rinse with clean water and allow to air-dry. Do NOT immerse in water or place in a dishwasher.
DISCLAIMER:
The makers of the Crosswind Compass cannot and do not guarantee the accuracy of the results provided by this product. The Crosswind Compass can only show the wind conditions at the exact position of its location. The Crosswind Compass can’t provide the wind conditions along the flight path of a projectile. There will always be variations of wind speed and direction—both vertically and horizontally—between the Crosswind Compass and the location of the target. The owner assumes any and all risks for decisions made as a result from using this product.
CAUTION:
The aluminum weather-vane rod contains a pointed tip that could cause injury. Keep away from small children.
STATEMENT OF LIMITED WARRANTY:
Who is covered?
The original owner.
How long is the warranty period?
One year from the date of purchase.
What is covered?
Any defect in materials or workmanship encountered during normal use.
What is NOT covered?
Damage caused by accidents, negligence, and the improper storage, handling, use, and transportation of the product.
Alterations or modifications performed without written authorization.
Damage to any wind meter (anemometer) that is attached to the weather vane.
To make a warranty claim:
Send an email to crosswindcompass@gmail.com with the following information:
Full name
Address
Date of purchase
Description of problem or defect
If possible, attach photo(s) of the problem or defect