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Old 01-19-2020   #7
xayraa33
rangefinder user and fancier
 
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Join Date: Feb 2004
Posts: 5,953
You can get 20 LR44 batteries for 8 dollars CDN and free shipping from Amazon.

A piece of 15mm dia. plastic tubing 45mm long costs $ 1.13 CDN or less at a hardware store.

Aluminium foil is found in every kitchen drawer or cupboard.
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