Gentlemen, I semm to have hit a deaad end with this really nice tube tester, part of the roll chart has been omitted at some time so without the proper data I cant test most of the tubes I need to, it is an EMC model 204, I have searched high and low with no luck,someone had mentioned that perhaps tube data from a simmilar model would be ok but cannot remember, any help would be great!!!

The Eico 625 should be the same as your EMC. There is a supplement chart and the original charts to down load at BAMA. This will cover almost any tube you need to test.

http://bama.edebris.com/manuals/