Antique Barometer and Weather Station Restoration

I have inherited a wall-mounted weather station set — an aneroid barometer paired with a thermometer and a hygrometer, all set into brass frames on a shared oak backing board. The barometer capsule has gone sluggish over the decades: the needle barely moves even during obvious pressure swings, and I suspect the aneroid capsule itself has lost its spring tension or picked up a slow leak at the soldered seam. I need someone who actually understands the mechanism, not just cosmetic cleaning.

Scope of work I'm hoping for:

1. Full disassembly of the barometer movement — inspection of the aneroid capsule, the lever and chain (or rack-and-pinion) linkage, and the hairspring that keeps backlash out of the needle.
2. Servicing or, if needed, sourcing a period-correct replacement capsule, then recalibrating the dial against a known pressure reference (a calibrated digital reference or a local weather station's verified reading) across at least three points on the scale — low, mid, and high pressure.
3. Cleaning and repolishing the brass bezels and case fittings without stripping the original patina entirely — I want it to look cared-for, not brand-new.
4. Replacing the glass on all three dial faces; one has a hairline crack and the others are pitted enough to distort the readings visually.
5. Checking and, if needed, re-gilding or re-inking the printed scale numerals and the «Rain / Change / Fair» arc on the barometer face, since some of the lettering has faded to illegibility.
6. A written report at the end noting what was found, what was replaced versus original, and the calibration offsets applied, so I have documentation for insurance and for any future work.

The hygrometer's hair or membrane sensor may also need replacing — happy to discuss that separately if it turns out to be beyond simple cleaning. I have clear photos of the movement with the back plate removed and can share close-ups of the maker's stamp and serial mark if that helps with sourcing parts or dating the piece. Timeline is flexible within reason, but I'd like the calibration verified against actual weather over at least a few days before final delivery, not just a bench test in a stable room. Please include your approach to sourcing period-appropriate capsules or glass in your proposal, along with examples of similar barometer or weather-instrument restorations you've completed.