Vintage Miller Mfg. Automotive Tool

[SDIceMan]

Hi all. I picked this tool up as part of a box lot at an auction. Miller Manufacturing of Detroit was a maker of specialty tools and equipment for the automotive industry. The logo appears to be a diamond surrounded by wings, stamped, "MILLER MANUFACTURING Co., Detroit Michigan USA". The number "C-3023" is stamped just below the logo. If anyone knows what this tool is, or even better, if you have an old Miller Mfg. catalog and can scan the page featuring this tool, I'd greatly appreciate it. Thanks!

 

[1637]

its a valve spring compresser for engines,cool find.
brad

 

[nsdq]

One of the better valve spring compressers you can find

 

[SDIceMan]

Thank you 1637 and nsdq! Obviously my ignorance when it comes to automotive tools is pretty obvious. I really appreciate the help.