Wednesday, February 22, 2017

Barometer level scale

This barometer came in for a new tube and calibration. Overall, the instrument was in beautiful condition with the original finish and amazing banding inlay around the edge.
I can't even guess what happened to the silvering on the level scale plate since the dial and the hygrometer silvering was perfect.  Although it only came in for a tube, I told the customer I could redo the plate if he wanted it done. Since it was the only flaw in the thing he said go ahead.
Here's a pic of the scale as it came in.
I can't explain why, but the silver in some of the letters in "LONDON" remained.

 This is the scale with the engravings refilled and the rest of the original silver sanded off.  A few more minutes to straighten out the graining (sanding marks) is needed.  It's hard to see in the picture, but this is bare brass.

This is the plate after the silvering process.

In the instrument