Columbia Cylinder Belt Sizes

[Homestead]

Greetings, as I have always pretty much been an Edison man, my ignorance is showing with Columbia machines. I just purchased from Stanton's a Columbia AB MacDonald and a BKT Columbia that will need belting. I have seen two sizes 3/16" and ⅝". Which would be correct for these machines? Quite thrilled to get some new machines to add to the collection, who knows I may become and Edison/Columbia man!! How about some of you all? What did some of you get from Stanton's? James Manker