Kestrel® 3500 Pocket Weather® Meter 13
BEAUFORT SCALE
The Beaufort Scale is a system for estimating wind force
without the use of instruments based on the visible
eects of the wind on the physical environment. The
behavior of smoke, waves, trees, etc., is rated on a 13
point scale. The scale was devised in 1805 by the British
naval Commander Sir Francis Beaufort (1774-1857) and
is still commonly used by mariners.
KESTREL POCKET WEATHER METERS
5-YEAR LIMITED WARRANTY
NK does not believe in “disposable electronics.” We
know that Kestrel Meters don’t typically lead pampered
lives, and we design them for years of performance in
tough conditions. Every Kestrel is designed and manufactured at NK’s facility in Boothwyn,
Pennsylvania, to be the accurate, reliable weather instrument you need for your application.
If for any reason you are not satised with the performance or operation of your Kestrel me-
ter in the rst 30 days, you may return it to your place of purchase for a full refund.
We guarantee every Kestrel Pocket Weather Meter to be free of defects in materials and
workmanship for a period of FIVE YEARS from their date of rst consumer purchase. NK
will repair or replace any defective product or part when notied within the warranty period,
and will return the product via domestic ground shipping or NK’s choice of method of inter-
national shipping at no charge.
The following shall be excluded from warranty coverage: damage due to improper use
or neglect (including corrosion); damage caused by severe or excessive impact, crushing or
mechanical harm; modications or attempted repairs by someone other than an authorized
NK/Kestrel repair agent; impeller failure not caused by a manufacturing defect; normal us-
age wear; failed batteries; and accuracy issues resolvable by recalibration. Recalibration is
provided free of charge within thirty (30) days of purchase if necessary.
Except for the warranties set forth herein, NK disclaims all other warranties, expressed,
implied or statutory, including, but not limited to, the implied warranties of merchant-
ability or tness for a particular purpose. Any implied warranties that may be imposed
by applicable law are limited to the term of this warranty. In no event shall NK be liable
for any incidental, special or consequential damages, including, but not limited to, loss
of business, loss of prots, loss of data or use, whether in an action in contract or tort
or based on a warranty, arising out of or in connection with the use or performance of
an NK product, even if NK has been advised of the possibility of such damages. You
agree that repair, and (upon availability) replacement, as applicable, is your sole and
exclusive remedy with respect to any breach of the NK Limited Warranty set forth
herein. All product liability and warranty options are governed exclusively by the laws of
the Commonwealth of Pennsylvania.
Your warranty period will be measured from your date of purchase. The best way to ensure
full warranty coverage is to REGISTER your NK product promptly on our website: www.
kestrelweather.com. We keep your registration information strictly condential and do
not sell it, share it, or use it for anything but product-related information bulletins (which
Force Description Kts
0 Calm 0
1 Light Air 1-3
2 Light Breeze 4-6
3 Gentle Breeze 7-10
4 Moderate Breeze 11-16
5 Fresh Breeze 17-21
6 Strong Breeze 22-27
7 Near Gale 28-33
8 Gale 34-40
9 Strong Gale 41-47
10 Storm 48-55
11 Violent Storm 56-63
12+ Hurricane 64+
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