Measuring Wind Direction With A Map Compass Tools

Wind Direction & Velocity • Have strong impact upon pesticide applications • Influence the

Determination of Wind Direction • What direction is the wind? • Example: South •

Determination of Wind Direction • In a court of law, a “south” wind –

• • What Direction Is The Wind? North? Northeast? East? Southeast? • •

Wind Direction • It’s crucial to accurately record the wind direction –For good application

Compass Exercise • To acquaint applicators about a compass. . – To measure wind

Map Compass As an example……… Click here for Coghlan’s Web site See “Products Listing,

Measuring Wind Direction • Hold compass flat and level • Point red arrow on

• Measuring Wind Direction Observe red needle with green tip points to magnetic

Measuring Wind Direction • Read wind direction in degrees at base of red arrow

Compass Guidelines • Always hold compass level • Use compass away from metal •

Vendors • Sporting goods stores • Tackle shops • Hardware stores • Price about

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Measuring Wind Direction With A Map Compass Tools For Pesticide Applicators Larry Schulze Pesticide Education Specialist University of Nebraska- Lincoln Extension

Wind Direction & Velocity • Have strong impact upon pesticide applications • Influence the ability to damage sensitive / off target areas • Drift is a primary regulatory compliant and concern

Determination of Wind Direction • What direction is the wind? • Example: South • What is the possible impact of the use of a very general wind direction such as “south”?

Determination of Wind Direction • In a court of law, a “south” wind – May be construed to be anything just south of east through just south of west – About 170 degrees – “South” is not accurate – Be more exact

• • What Direction Is The Wind? North? Northeast? East? Southeast? • • South? Southwest? West? Northwest? • With 360 degrees in a circle – There are 45 degrees in each selection of the above directions – This is still not specific enough

Wind Direction • It’s crucial to accurately record the wind direction –For good application records • It’s not required, but recommended –To protect one’s actions –To reduce potential liability

Compass Exercise • To acquaint applicators about a compass. . – To measure wind direction – To manage drift – To protect sensitive areas – For accurate records

Map Compass As an example……… Click here for Coghlan’s Web site See “Products Listing, ” then “Compasses” Product No. 8162

Parts of a Compass

Orientation Arrow

Red Needle (points to magnetic North)

Black Arrow Outline

Rotating Dial

Measuring Wind Direction • Hold compass flat and level • Point red arrow on plastic base into the wind

• Measuring Wind Direction Observe red needle with green tip points to magnetic North • Turn compass dial until black arrow outline is under the red needle

Measuring Wind Direction • Read wind direction in degrees at base of red arrow • 45 degrees (a northeast wind)

Compass Guidelines • Always hold compass level • Use compass away from metal • Do not use in tractor cabs

Vendors • Sporting goods stores • Tackle shops • Hardware stores • Price about $5. 00