Added to http://en.wikipedia.org/wiki/Micrometer#External_links

hope it is well received by the wikipedia community

[code]Simulation of Vernier caliper

File:Vernier caliper applet.gif|[http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.msg2457#msg2457 Ejs open source Vernier calipers java applet with objects and zero error logic]
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