A pencil detonator or time pencil is a time fuze designed to be connected to a detonator or short length of safety fuse. They are about the same size and shape as a pencil, hence the name. They were introduced during World War II.
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Famous quotes containing the word pencil:
“Then my verse I dishonour, my pictures despise,
My person degrade & my temper chastise;
And the pen is my terror, the pencil my shame;
And my talents I bury, and dead is my fame.”
—William Blake (1757–1827)