Safety-lamp
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A lamp surrounded with a cylinder of wire gauze, to give light in mines, without the danger of setting fire to inflammable gases.
Downloads
1371×2400, 605.4 KiB
584×1024, 74.3 KiB
365×640, 36.5 KiB
182×320, 13.5 KiB
A lamp surrounded with a cylinder of wire gauze, to give light in mines, without the danger of setting fire to inflammable gases.
1371×2400, 605.4 KiB
584×1024, 74.3 KiB
365×640, 36.5 KiB
182×320, 13.5 KiB