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 enlarge

8" Danforth Constellation Compass Repair

The largest of the Constellation Compass series, this was also the largest production spherical compass made. The clear dome measures over 8 inches in diameter.

In January 2010 Viking Instruments purchased the entire inventory of Danforth Parts as well as the tooling necessary to continue manufacturing replacement compass parts. Viking Instruments is now the exclusive manufacturer and distributer of Danforth compass parts and service.


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8" Constellation8" Constellation
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Danforth, Kelvin White 8" Constellation PartsDanforth, Kelvin White 8" Constellation PartsOriginally designed in 1947 by Wilfrid G. White of the Kelvin White Co., the Constellation series compasses were available in 5",6",7" and 8" sizes with the Kelvin-White name on them. The Kelvin-White company became the Wilfrid O. White and Sons Co. and the Constellations were made under that name until 1961 when Danforth bought the company and used the name Danforth-White on the compasses, finally dropping the White name in the late 1960's to become Danforth compasses. Danforth added a 4" constellation to the line. In the 1980's Rule industries bought Danforth and continued using the Danforth name. Rule added a 4-1/2" Constellation to the line. Contellations are still manufactured today.

To determine which size Constellation you have, measure the diameter of the clear dome. The 8" measures 8-3/8" in diameter. The 8" Constellation takes about 1.25 gallons of oil to fill it. Click on the schematic to enlarge the diagram.

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GETTING YOUR COMPASS REPAIREDGETTING YOUR COMPASS REPAIREDViking Compass Repair Service specializes in marine compass repair. We repair compasses manufactured from the early 1800's to present day marine compasses.

We are an authorized warranty repair station for most compass manufacturers, including but not limited to E.S.Ritchie, Danforth, Rule, C. Plath. We also repair compasses by: Aquameter, Star Compass Co, Marine Compass Co., Dirigo, Wilfrid O. White and Sons, Kelvin White, Wilcox Crittendon, John Bliss, Baker Lyman, Lionel

In January 2010 Viking Instruments purchased the entire inventory of Danforth and Aquameter compass parts as well as the tooling necessary to continue manufacturing replacement compass parts. Viking Instruments is the exclusive manufacture and distributer of Danforth and Aquameter compass parts and service.

If you are interested in getting an estimate to repair your compass. Pack it up carefully and ship it to;

Viking Instruments, Inc. 41 Summer St Kingston MA 02364

Please be sure to include your name, address and phone number with the compass. We will contact you via telephone or email within 2-3 working days from receipt of your compass.

Most current production compasses can be repaired and be ready for return shipment less than two weeks of the date of customer approval.

If you wish to speak to someone in our shop concerning your compass you may call 781-585-2100 Monday- Thursday From 9:30-5:00 E.S.T.

Our Our retail Store is open Monday, Tuesday and Thursday 12:00-5:00