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Fireside Chat ’The Untold Story of the Production of Zeiss Microscopes in Israel, 1952 – ~1965’

On-line, for SIS-members only.

Presented by Yuval Goren. An Israeli microscope. Between 1952 and ca. 1965, over 2,000 copies of the Carl Zeiss Standard Junior microscope were manufactured by the Louis D. Brandeis technological high school in West Jerusalem, Israel. The ‘Brandeis microscope’, as it was nicknamed, was a rather exact copy of the original German model with some …

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Fireside Chat ’A Celebration of Commemorative Sundials’

On-line, for SIS-members only.

Presented by Geoff Parsons. Geoff Parsons next to a heliochronometer on the parade ground at BRNC Dartmouth. Sundial are as old as history and have been used to both mark time, and celebrate important events and people. They can be drawn by a child, and also be immensely complicated. There will be brief introduction on …

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Fireside Chat ’The Schumacher Slide Rule — A Slide Rule with divisions at equal intervals’

On-line, for SIS-members only.

Presented by Jerry McCarthy. Jerry McCarthy's reconstruction of the Schumacher Slide Rule. The device is formally known as a Faber-Castell model 366 slide rule, with the subtitle “System Schumacher”. It was produced and sold from 1909 to 1929. The title page of a 1909 document for this slide rule refers to the device as “A …

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Fireside Chat ’Precious French drawing and mathematical instruments and their makers, 1650-1850’

On-line, for SIS-members only.

Presented by Patrick Rocca. Architect's case by Pierre (I) Le Maire, Paris 1717-1722. Signed silver instruments. This talk traces the history of these instruments through a large number of recent illustrations and discoveries, both in terms of objects and documents. It deals in particular with the great dynasties of makers and their workshops, the typology …

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