Yes prof i know that i had the first version that written by Fu-Kwun Hwang
Edited by Loo Kang WEE and Wolfgang Christian
URL   [u]http://www.compadre.org/osp/items/detail.cfm?ID=9707[/u]
I see the latest version from  Vernier Calipers that you edit is
Very interesting more tools and options
And thank you about shown me my missing  ;)