On 7/19/2011 6:27 AM, Jim Wiley wrote:
> I would like to get the opinion of Elecraft list members, particularly
> builders of kit versions of the K1, K2, and K3, concerning magnifier
> lamps. These are commonly known as "Luxo lamps", although that is only
> the best known brand. In other words, what are you using, how does it
> work for you, and what don't you like, if anything,
I have only peripheral eyesight in one eye, so it's monocular
eyesight for close-up work - a soldering iron in my hands is a
deadly weapon. I use a magnifier for reading or examining
things where monocular eyesight is acceptable.
I'm using a LEDGE (brand) swing-arm magnifier that I coaxed from
my artist wife. Description below.
> Best magnification factor. The most common are 1.75X (3
> diopter) and 2.25X (5 diopter).
Not sure.
> Size and shape of magnifying lens:
4" round (spherical ?)
> Focal range: how far from work is optimum, and what are close
> and far limits
I usually adjust the lens from the work and my eye from the
lens for a clear image so I can't quantify that. Sometimes I
have to use my reading glasses in addition to the magnifier.
> Eyestrain: distortion, clarity of lens, adequacy of illumination
No problem. My eyestrain comes from excessive reading rather than
from the mechanics of the magnification.
> Illumination: LED vs. CFL - how long to reach max output
Screw-base small daylight color-corrected CFL. Very bright.
Instant on.
> Positioning: Best arm length, does the unit "stay where it's put?"
Most of the time. Had to take a pair of pliers to the
thumbscrews to make the joints tighter
> Mounting: Clamp mount, robustness of mount. Can the unit be removed
> from the base / desk clamp, etc.
Clamped onto rear of desktop. Can't remove the unit without
taking the mount off.
> Ease of working under the lamp/ magnifier: Does the unit get in
> the way of soldering, etc.
See above !
> Problems observed: What could be done better
Suits my needs.
-- 73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402
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