Mechanic Paper

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The Tattwa Tide Calculator

The Tattwa Tide Calculator

BRL RADIAC Calculator No. 1 (ca 1952-1956)

BRL RADIAC Calculator No. 1 (ca 1952-1956)

Nuclear slide rules and dials

Nuclear slide rules and dials

Cartographies of Time: A Visual History of the Timeline | Brain Pickings Discus chronologicus by German engraver Christoph Weigel, published in the early 1720s, is a paper chart with a pivoting central arm. Rings represent kingdoms, radial wedges represent centuries, and the names of kingdoms are printed on the moveable arm.

Cartographies of Time: A Visual History of the Timeline | Brain Pickings Discus chronologicus by German engraver Christoph Weigel, published in the early 1720s, is a paper chart with a pivoting central arm. Rings represent kingdoms, radial wedges represent centuries, and the names of kingdoms are printed on the moveable arm.

BRL RADIAC Calculator No. 1 (ca 1952-1956)

BRL RADIAC Calculator No. 1 (ca 1952-1956)

mercury flash calculator

mercury flash calculator

Slide Rule for Shielding Calculations from Radioisotope Applications Company (ca. 1950s)

Slide Rule for Shielding Calculations from Radioisotope Applications Company (ca. 1950s)

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Ad Astra's Myspace Profile. According to Rick Thompson (tytoalba on Flickr), he has 'always been fascinated by volvelles, or the information wheels used to organize information in an interactive way'.  He 'wanted to use one to break out of the usual grid/table format of myspace profiles'. He 'combined the volvelle idea with an orrery...and came up with this' (view www.myspace.com/tytoalba)

Ad Astra's Myspace Profile. According to Rick Thompson (tytoalba on Flickr), he has 'always been fascinated by volvelles, or the information wheels used to organize information in an interactive way'. He 'wanted to use one to break out of the usual grid/table format of myspace profiles'. He 'combined the volvelle idea with an orrery...and came up with this' (view www.myspace.com/tytoalba)

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