View of a ball and socket machine used for ball race grinding. Embossed on front: "C872." Typed on back: "Subject: Machinery. Collection: MS3/Charles E. Duryea Collection. Date: (Perhaps 1905). Source: Estate of Charles E. & M. Jerry Duryea. I.D.: B & S machine for ball race grinding." Handwritten on back: "B & S machine for ball race grinding, say 1905."
