There are many applets for vernier calipers, created by prof Hwang and modified versions by Ahmedelshfie&lookang wee you are welcome to check [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1408.0]vernier cliper (inch/mm mode, dial mode, measure inner/outer diameter and depth)[/url] and [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1513.0]Vernier Calipers [/url] also [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.0]Ejs open source Vernier calipers java applet with objects, help & 0-error logic[/url] and also jdk version [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=52.0]Vernier[/url]