Blen-Cal Electronics:I have installed a Blen-cal unit on a printing press and it did a good job. I just bought a used unit, model MID sn 1111 and going to try to use it on a collator to measure number of sheets. There was no information with this used unit, so I am looking for any and all information for this model and serial number. Can you get this information so I can try using this item on our equipment?