1002943 Wall Barograph Capsule, Antoine Redier Design, 3 1/4" diameter, central flat area in middle of top, threaded hole in base for fixing, 3/4" tall with internal springing, silvered finish top and bottom with soldered sides and side evacuation nib. We had a few made when we needed one for a repair in the days when we could get them made. only a few left for the discerning collector of these very high quality early barographs that occasionally turn up.
