This little 8" tool has has a sharp, curved point at one end, and a fork at the other. So, logically but unimaginatively enough, it's called an "Angle reamer and forked tip tool" and was designed to aid in probing and soldering printed circuits. It was made with special stainless steel hardened probes that solder will not stick to.
It was made by GC Electronics, which started out life in 1930 as the General Cement Manufacturing Company of Rockford, Illinois. I've discussed the company before in a previous post on the Speedex Trig-O-Matic wire stripper. Their website proclaims:
For over 75 years, GC Electronics has grown and changed with the times, Migrating its way from Tubes to Transistors to Integrated Circuits to the Microprocessor era. From Early Telephone and Radio to the Internet, GC Electronics has been serving the needs of the Electrical and Electronic Distributors for almost 4 generations.