I scored this neat little iodine pencil on etsy not long ago. The design is fabulous, the glass iodine tincture container screws into another protective container, which I believe is a thicker glass although I am not sure. A little searching indicates that this item may be pre-1939 although I cannot be sure as I have no images with which to compare:
science museum group
Hmmm, I'm not seeing a skull and crossbones on the label!
This photo demonstrates the proper use of an iodine pencil. This is from a 1932 edition of Popular Science, so I'm sure that this was a relatively new item at this time.
science museum group
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| Boots Iodine Pencil, protective container |
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| Boots Iodine Pencil |
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| Boots Iodine Pencil |
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| Boots Iodine Pencil |
Hmmm, I'm not seeing a skull and crossbones on the label!
This photo demonstrates the proper use of an iodine pencil. This is from a 1932 edition of Popular Science, so I'm sure that this was a relatively new item at this time.
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| Handy Pencil holds Iodine, Popular Science, 1932 |