Webster Signature Database - Suggest Correction

Signature Maker Instruments Comments Location References
PORRO, IGNAZIO Italy; France; Italy, 1795-1875, MIM OIM SIM Prism Monocular with Telemeter, 1849 = SWE; Cylindrical Slide Rule = SWE. invented and made the first prism monocular; retired in 1861. Florence; Paris; Milan. Pipping 1; Dewhirst; Brenni 1; RSW.

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