To change the battery:
1. Open the drawer on the bottom of the instrument by gripping the ends
between the thumb and the index finger.
2. Replace the run-down battery with a new one
3. Insert the drawer back into the instrument, being mindful of the polarity
(see Fig. 5). Please note that wrong positioning of the battery drawer
(inverted polarity) inside the instrument may cause irreversible damages!
Recommendations for Use
Even though the components we use are resistant to high temperatures, we recommend
you do not expose your instrument to intense heat sources, by leaving it in the sun under
the windscreen of a car for instance.
This instrument is not waterproof, but it can nonetheless be used in the rain for one
measurement. However, under no circumstances should it be expected to withstand bad
weather for a long period of time or to be immersed in water.
We recommend you put the cap back into place once you have finished using your :
this will prevent the cups and its shaft from being damaged.
Even though the electronic components are protected in their casing and the polyethylene
foam, they do no like shocks. You will therefore be well advised to protect your instrument
from impact, as a result of falls or otherwise.
Conversion Table for the Various Units of Measurement
Beaufort knots km/h mph m/s fps
1 1-3 1-5 1-3 1-2 1-4
2 4-6 6-11 4-7 2-3 5-10
3 7-10 12-19 8-12 4-5 11-17
4 11-16 20-28 13-18 6-7 18-25
5 17-21 29-38 19-24 8-10 26-34
6 22-27 39-49 25-31 11-13 35-44
7 28-33 50-61 32-38 14-16 45-55
8 34-40 62-74 39-46 17-20 56-67
9 41-47 75-88 47-55 21-24 68-80
10 48-55 89-102 54-64 25-28 81-92
11 46-63 103-117 65-73 29-32 93-106
12 >64 >118 >74 >33 >107
Limited warranty
This limited warranty shall be in effect for one year after the date of purchase by the original
consumer purchaser. During this limited warranty period, JDC ELECTRONIC USA will repair
or replace without charges any defective product with a comparable product. This limited
warranty will not apply to any instrument that has been misused, improperly installed,
repaired, altered or which has been the subject of any negligence or accident.
Fig. 5
