RBD, 2600 and RB Duodials
- 1965-Jul
Based on the orientation of the inscription, the RBD is the dark dial, the 2600 the small dial, and the RB the large, light dial.
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Rights | In Copyright - Rights-holder(s) Unlocatable or Unidentifiable |
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View in library catalog |
Related Items
Cite as
Dietrich, T. A. “RBD, 2600 and RB Duodials,” July 1965. Beckman Historical Collection, Box 85. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/t148fh46c.
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