What is this tool used for? Vulcan WWT-85

1964 Vulcan tool catalog from "The Internet Archive." I found no such tool, tho. There are some "WW" prefixes in the front end/ suspension section, so some sort of wheel weight tool might be a good guess

https://archive.org/details/vulcantoolscatalognoa64
https://dn790001.ca.archive.org/0/items/vulcantoolscatalognoa64/Vulcan Tools Catalog No A-64.pdf