Parts for the movement are not sold separately. It will be necessary to buy the entire movement #825.
Co-Ax body #803 comes with the bushings installed but it requires special fixtures for proper assembly and do-it-yourself repairs are strongly discouraged.
Shaft #841 is different in inch and metric Co-Ax indicators. It's the top, short end of the shaft diameter that is measured. The long end is the same for both types.
Pin #846 is a press fit into rocker #844. It will slide easily through the shaft. Choose two spacers of an appropriate thickness to eliminate side play. When tapping the pin into place take care not to bend shaft #841. Use some form of support to prevent damage. The straightness of this shaft is the critical element in the Co-Ax indicator's function. Two spacers will also be used under screw #863 and nut #864 to eliminate side play in that location.
The glass crystal #834 is .020" larger in diameter on the new models (1.465"). If you're trying to fit it into an old model, use a diamond file to modify it. The alternative is to replace the old bezel with a new style bezel so that the crystal fits. Old style crystals are not available.
The new style bezel #826 easily replaces the old style. It will, however, need the new crystal #834 (see note above).
Spacer #847 is used to eliminate sideways play. Trial and error will tell you which size to use, although we find that .004" is the most common in our repairs.
If you would rather have us repair these co-axial indicators for you, please refer to page 30.
Be aware that cheap Asian imitations also exist. There is no guarantee that these original Blake parts would work on the Chinese indicators.
Aerospace Axis Offset Indicator
For a fraction of the price of a new Blake Co-Ax Indicator you can buy this Chinese import sold under the brand name "Aerospace". It is actually surprisingly well built. We don't advocate buying Chinese when an American option exists, but perhaps you have a good reason to support the Chinese economy. Just don't complain about jobs going overseas.