ESB Chestbox question

I am trying to upgrade my ESB chestbox on a poor mans budget. I am confident that I can hand craft the chest box switches, but I need some measurements to go off of. If someone out there has a schematic drawing of some accurate ESB switches (with measurements), I would deeply appreciate some help.

Thanks

 

Try these sites:

http://www.darthblade.com/chestbox.htm

http://www.geocities.com/the_executor_ii/chestboxpage.html

 

Thanks for the help.