Don't get your hopes up. the RS 232 and 9 pin D-sub connectors reek of 80's technology. It was used to interface equipment to computers with those protocols. Today's computers and equipment don't use those connections anymore.
It looks like it did interface some type of mitutoyo equipment to a computer and the whole system may be quite useable today if it was all together.
Infinity qs is a quality system used in manuf. Plants. This sends input from mics, dial indicators, etc.into a computer quality system. Its from the 80's. Not much value wise