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A nautical instrument that can be repetitively mounted to and removed from a surface within a ship without the use of tools or other instruments. The nautical instrument incorporates a mounting system that achieves slidable locking engagement of the nautical instrument to a bulkhead plate that is pe

A nautical instrument that can be repetitively mounted to and removed from a surface within a ship without the use of tools or other instruments. The nautical instrument incorporates a mounting system that achieves slidable locking engagement of the nautical instrument to a bulkhead plate that is permanently secured to the surface of the ship. In one embodiment, the invention is a nautical instrument comprising a housing having a bracket assembly comprising a downwardly extending overhang section that forms first and second channels between the overhang section and a rear surface of the back plate, the channels opposing one another in an angled orientation; and a mounting plate assembly connected to a front surface of a bulkhead plate, the mounting plate assembly having first and second angled edges adapted to be slidably inserted into the first and second channels of the bracket assembly.

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1. A nautical instrument comprising: a housing having a front face comprising an opening, the housing comprising a coating comprising zirconium;a transparent lens hermetically enclosing the opening of the housing; anda gauge mechanism for measuring a desired standard, the gauge mechanism positioned

1. A nautical instrument comprising: a housing having a front face comprising an opening, the housing comprising a coating comprising zirconium;a transparent lens hermetically enclosing the opening of the housing; anda gauge mechanism for measuring a desired standard, the gauge mechanism positioned within the housing. 2. The nautical instrument of claim 1, further comprising an O-ring compressed between the housing and the transparent lens. 3. The nautical instrument of claim 2, wherein the housing further comprises a material. 4. The nautical instrument of claim 3, wherein the material is plated with the coating comprising zirconium. 5. The nautical instrument of claim 4, wherein the material comprises brass. 6. The nautical instrument of claim 2, wherein the housing, the transparent lens and the gauge mechanism comprise a main body. 7. The nautical instrument of claim 6, wherein the main body comprises a rear surface. 8. The nautical instrument of claim 7, further comprising a bulkhead plate comprising a front surface and a means for securing the bulkhead plate to a surface of a ship. 9. The nautical instrument of claim 8, further comprising a bracket structure connected to either one of the rear surface of the main body or the front surface of the bulkhead plate. 10. The nautical instrument of claim 9, further comprising a mounting structure on the other of the rear surface of the main body or the front surface of the bulkhead plate, wherein the mounting structure and the bracket structure are sized and shaped to slidably mate with one another and secure the main body to the bulkhead plate. 11. The nautical instrument of claim 1, further comprising a dial plate comprising a ring-like wall portion defining a cavity having a floor, the ring-like wall portion having a top edge having a ledge sized and shaped to correspond to a perimeter of the transparent lens. 12. The nautical instrument of claim 11, wherein the dial plate is positioned within the housing. 13. The nautical instrument of claim 11, wherein the transparent lens rests on the ledge of the dial plate. 14. The nautical instrument of claim 11, further comprising a back plate enclosing a rear face of the housing. 15. A nautical instrument comprising: a main body comprising: a housing, the housing having a front face comprising an opening, wherein the housing comprises a coating comprising zirconium;a transparent lens hermetically enclosing the opening of the housing;a gauge mechanism for measuring a desired standard, the gauge mechanism positioned within the housing; anda rear surface. 16. The nautical instrument of claim 15, further comprising a bulkhead plate comprising a front surface and a means for securing the bulkhead plate to a surface of a ship. 17. The nautical instrument of claim 16, further comprising a bracket structure connected to either one of the rear surface of the main body or the front surface of the bulkhead plate. 18. The nautical instrument of claim 17, further comprising a mounting structure on the other of the rear surface of the main body or the front surface of the bulkhead plate, wherein the mounting structure and the bracket structure are sized and shaped to slidably mate with one another and secure the main body to the bulkhead plate. 19. The nautical instrument of claim 15, wherein the housing further comprises brass. 20. The nautical instrument of claim 19, wherein the brass is plated with the coating comprising zirconium.