Tokyoflash's Kisai Stencil watch: telling the time with negative space

Tokyoflash's latest Kisai watch is the Kisai Stencil, based on a concept design submitted by a math teacher named Heather Sable. It uses "negative space" to draw the numbers, a display that is cryptic at first but is easy to read at a glance once you've figured out the knack of it. I found that [...]

Source: http://boingboing.net/2012/02/21/tokyoflashs-kisai-stencil-wa.html

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