A full service instrument shop specializing in sales and service of marine compasses. Suppliers of genuine replacement parts for Danforth, Aquameter, Ritchie, Kelvin White, Dirigo and Star compasses

Click to enlargeSerial Number Log

Each compass manufactured by E.S. Ritchie was serial numbered and the numbers were all logged into the serial number record books. These books are still in existance at E.S. Ritchie. This picture of a page in the log shows the record of this 9" compass #41383 which was sold April 5th 1913 to H.D. Edwards & Co. The records also show that it was repaired for the Upson Walton Co. on Sept. 27 1915.