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30th July 2016, 01:58 PM
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#3 |
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Member
Join Date: Dec 2014
Location: Black Forest, Germany
Posts: 1,226
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I am no expert in this field, but I think these are so called "high noon cannons". They fired a shot at high noon by the sun the beams of which got focussed by a magnifier to the touchhole of the cannon.
corrado26 |
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