Fischer Instruments 1434TD-22 6 1/2" Mahogany Wood and Brass Tide Clock This beautiful nautical instrument is made from the finest materials, and is at home with any marine decor. The back includes a hook for easy hanging. Tide Clock Limitations: This tide schedule is geared to tides for the east coast of North America. They will not accurately depict tides for the west coast. The areas marked in the figure below provide accurate tide fluctuations. The Fischer factory for precision instruments was founded in 1945 by aircraft engineer Kurt Fischer, in a small village in the Erzgebirge called Drebach. Still owned and operated by the Fischer family, the experienced engineers and craftsman have designed quality instruments for measuring weather and climate.