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mikef

Head-mounted magnifier

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mikef

Many older model flyers will find they need one of these when their eyes begin to lose the ability to close-focus.

I grabbed mine today to facilitate the replacement of a failed pocket zipper. (Yes needlework too!)

I noticed some damage on the part of the headband that crosses the forehead.....

On the left, quite a deep gash and on the right, a slightly curved line of shallower marks.  I have a theory.....

 

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Steve J

I suspect that you are lucky that the materials are not more flammable.

Steve

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mikef

That's what I thought too.

To avoid scratching the plastic lenses, the device is has been carried lenses-up in the top of  a cardboard box of stuff in the back of my estate car.  The chances of the sun being correctly lined up are not great but it's happened a few times by the look of it.  I held the thing under a lamp to test the theory - see below.

 I'll be putting it in a bag in future.  One of the other items in the same cardboard box is a plastic bottle of solvent for cleaning items for glueing.....

Be careful out there.

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Simon B

My father set light to his living room table with a 100mm map magnifier left uncovered.... good job he was home when the sun came out. Mother was not impressed.

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