I have had this for at least 40 years purchased in a antiques shop in Ohio when I worked of a car manufacture. Pictures are below. On th bottom it says Jarvis 1357, 1/4-20, Pat. No. 1683038, Im moving and don't know what to do with it. Need to down size. This is my first post and I am new to all of this. Thank you in advance to anyone with insight.