Tool ID "Lee Splicer"

[Dusk Blue Z]

My guess would have been a fixture for adding thimbles to wire cable. I learned how to do that while in A&P school a long time ago. That would preload the cable around the thimble so you could install it tight. Lots of fun to use, think of shanking hands with a porcupine over and over again. Being chrome that was probably commercial grade and pretty pricey in the day.