Epact Scientific Instruments of Medieval and Renaissance Europe

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Glossary

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56 to 60 of 227 glossary terms

diptych dial: type of sundial which, in many cases, could be called an astronomical compendium, in the form of a folding tablet, usually in ivory, with at least a string gnomon and a horizontal dial on the inside, but often with other dials as well.

disc dial: type of sundial belonging in the class of altitude dial.

dividers: instrument with jointed legs for measuring and transferring distances, see article on the dividers.

dominical letter: letter denoting the day of the first Sunday of the year, see article on time and date.

drawing instruments: instruments used for drawing and constructing geometrical figures, see article on drawing instruments.

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