C.1880, Austrian, Resch Brothers, 1-Wt "Vienna Regulator", from Dana's sun porch off the kitchen
Anonymous (not verified)
23 October 2024
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C.1880, Austrian, Resch Brothers, 1-Wt "Vienna Regulator", from Dana's sun porch off the kitchen
Condition: clean and running. Dana had done a lot of research on invar, and had added invar rods to many of his pendulums. This is an example of that ...