Joined: Aug 2017
Posts: 1,106
Likes: 985
From: Minneapolis
Bikes: 1960 Carlton Franco Suisse,1974 Peugeot PX10, 1970 Hetchins, 1953 Rotrax Super Course, 1972 and 78 Raleigh Professionals, 1972 Schwinn Paramount, 1972 Motobecane Le Champion, 1965 and 67 Carlton Flyers, 1975 Raleigh International, 1972 Gitane TDF
The 120 stamp on the spindle means that this bottom bracket is to be paired with a frame spaced 120mm at the rear dropouts. Your getting the correct reading from your caliper.