Improved instrument encasing systems may solve a variety of problems associated with existing systems. In one aspect, an improved instrument encasing system may include a suspension bracket and back plate that enable tool-less mounting and/or disassembly and/or security in mobile installations. Optionally, the system suspension bracket also may provide a template for easy alignment and selection of a mounting position and/or installation thereto. In some embodiments, the back plate may be temporarily reduced in diameter to enable quick and easy access to instruments mounted on an inner housing, or for access to the dial face for personalization. In another aspect, an inner housing of the instrument encasing system may provide one or more spring blades that receive instrument mounting sub-assemblies that provide for easy mounting and replacement of instruments. Optionally, stabilization weights also may be provided in the inner housing to absorb vibrations and increase the overall weight and stability of the housing, enabling lighter materials to be used in the manufacture of other components. In some embodiments, a Physical Vapor Deposition coating may be applied to an outer housing to provide various functional and/or aesthetic qualities.