Many models of Arcade wall-mount coffee grinders and coffee mills use some glass catch cups. Some use generic glass cups without markings, while others have glass catch cups with unique markings. For example, the Arcade Crystal No. 3 coffee mill uses a glass receiving cup graduations marked at tablespoon levels. The Arcade No. 25, earlier versions, came with a generic glass cup with no markings. Not all coffee grinders came with glass cups, though. The X-Ray grinder had a detachable cast iron cup.
Arcade Coffee Grinder Catch Cup Listings
Many antique coffee mills sold on eBay or other markets have replacement receiving cups. You must know what it looks like if you want the original matching cup. Please let me know if you need help identifying the matching cups.