SCHEFFELT, MICHAEL |
Germany, 1652-1739, MIM |
Sector with full bow, 1694 = ULM; Sectors = HAK (1700), EMA (1705), ULM (1710 & 1716)), KRE (1717), ROU (1730), NAC (1730), SAL (1739); Circumferentor, 1705 = HAK; Graphometers = NUR (1708), ULM (1719); Pantometrum = ULM. |
the pantometrum is marked "a P. Schott"; author; Zinner's dates for Scheffelt do not agree with the dated instruments. |
Ulm. |
Zinner 1; Michel 3; Daumas 1; RSW. |
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