Limited Time Special! - Purchase (1) or more and receive (1) FREE Spare Battery With Each 1000 - 3500 Series Meter Purchased! This model is the Night Vision Preserving version of the Kestrel 3500 Many Kestrel users
need to know everything that the weather is doing, but don’t need to
log the data. We developed the Kestrel 3500 just for them. It provides
comprehensive environmental data on nine different measurements with
the simplicity of the Kestrel 1000.
Simply turn it on and scroll left and right to see exactly what the
environment is doing. When you’re done, slip on the hard cover and your
Kestrel 3500 Pocket Wind Meter is just about indestructible.
While
the
weather can dictate the comfort level of individuals working or
playing outside, it plays an even bigger part in many professionals’
jobs. Irrigation professionals use the Kestrel 3500 to ensure they are
irrigating efficiently and the
water they are dispersing is actually hitting their intended target,
and not evaporating or blowing away. And on construction sites Kestrel
users are preventing plastic shrinkage cracks and curing concrete more
effectively with their Kestrel 3500.
The Kestrel 3500NV measures every environmental condition simply with the press of a button!
Note:
This unit has a night-vision preserving backlight which helps users to
sustain natural night vision. The NV's backlight incorporates an
optical filter to reduce overall brightness and minimize blue and green
spectrum light to preserve night vision. Additionally, NV backlights
are also much dimmer than a standard backlight, making it more
difficult to detect with the naked eye in night operations. This
backlight appears soft greyish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.
It takes 30 to 45 minutes for the average eye to adapt to
darkness and maximize night vision. Even a short burst of white,
yellow, green or blue light “bleaches out” the rod cell photoreceptors
in the eye and causes night blindness until the entire adaptation
process can take place again. Light in the red spectrum does not cause
this “bleaching out”, preventing night blindness and night vision
fatigue. Manufactured in the USA!
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