Title: Alarm Clock Jigsaw Puzzle
About: Time to solve today's puzzle! Traditional mechanical alarm clocks, like the one in this jigsaw puzzle, have two bells that ring by means of a spring that powers a gear to propel a hammer back and forth between the two bells. User-settable mechanical alarm clocks date back at least to 15th-century Europe.
Puzzle of the day on: 02-Jun-2015
Image Credit: Public Domain
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