Beginning in about 1949, Aage Jensen was doing business under the name Waterborg Machine Co., and manufactured a disk-sanding head, the "Scan-O-Matic" hydraulic tracer attachment for milling machines, and a milling attachment for a drill press. At some point in the 1960s the business name changed to Scan-O-Matic, Inc. A 1999 renewal of a trademark registration suggests that Jensen was still running the business 50 years after he began.

From May 1952 Popular Science

Information Sources

• November 1949 Popular Mechanics, page 164. On page 14 is a listing that identifies the manufacturer: "Ring locks sanding disk in place (Waterborg Machine Co., 2830 Rapids Drive, Racine, Wis.)

  Ring Locks Sanding Disk in Place

  Abrasive disks snap on and off a new sanding head with a twist of a lock ring that clamps them securely in three places. The lock-ring pressure is adjustable for various types of abrasive, ranging from the very finest to the coarsest. The disks are slit in three places around the edge so that portions of them protrude through slots in the sanding head. the lock ring holds the disk by pressure of its three spring-steel feet on these protrusions.

• 1958 trademark registration: "SN 48,533. Aage Jensen, d.b.a. Waterborg Machine Company, Racine, Wis. Filed Mar. 27, 1958. / SCAN-O-MATIC / For Trader System for Machine Tools. First use Mar. 20, 1958."
• 1959-01-26 Machinery (volume 103, p 96). "Hydraulic Duplicating Attachment—Waterborg Machine Co., 2830 Rapids Dr., Racine, Wis. Scan-O-Matic can be installed on any standard mill. Tracing stylus automatically follows contour of master regardless of whether straight walls, angles or curves are being cut. System does not reduce original range of machine. Cross feed is adjustable from 0.025 to 0.150 in. Adjustable stop regulates depth of each consecutive cut. (Nov. 17, p248)."
• 1999 trademark registration, "Scan-O-Matic, Inc., Racine, WI, Aage Jensen, Racine, WI, DBA Waterborg Machine Company: 670,895. Ren. 4-29-99, U.S. Cl. 23 (Int. Cl. 7)."