Quote:
Originally Posted by merlinmaxwell
The problem with idiot proofing is that here are some clever idiots, the Keeler opthamascope has a battery that can fit either way round (positive either end, negative on a side spring) made it easy to charge at the bottom and light at the top. So many people asked which way round it went so an arrow was put on it.
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https://www.euroenergy.co.uk/keeler-...100-p-531.html
At that price I would want a technician to call and change it for me.