View of a business card for Grant & Crosman. Printed on front: "Grant & Crosman mathematical instrument makers, no. 214 Jefferson Avenue, Detroit, Michigan. Solar compasses, of the best quality, with latest improvements. Engineers' and surveyors' instruments made and repaired to order. Drafting instruments made and repaired to order. Drafting instruments, separate and in cases. W.C. Grant, Chas. Crosman. Refer by permission to John Burt, Detroit. Wm. Burt, Mt. Vernon, Mich."
