A dioptra (sometimes also named dioptre or diopter, from Greek: διόπτρα) is a classical astronomical and surveying instrument, dating from the 3rd century... 4 KB (412 words) - 12:00, 4 April 2024 |
Hero of Alexandria (redirect from On the Dioptra) of diverse objects On the Dioptra, a collection of methods to measure lengths, a work in which the odometer and the dioptra, an apparatus which resembles... 22 KB (2,384 words) - 07:17, 7 April 2024 |
Instruments used in surveying include: Alidade Alidade table Cosmolabe Dioptra Dumpy level Engineer's chain Geodimeter Graphometer Groma (surveying) Laser... 2 KB (129 words) - 19:19, 4 October 2023 |
and angles were measured using a sighting rod that the Greeks called a dioptra, the forerunner of the Arabic alidade. A detailed contemporary collection... 6 KB (672 words) - 15:50, 5 April 2024 |
Diopter (disambiguation) (redirect from Dioptra (disambiguation)) photography A theodolite or similar surveyor's angle measuring device A dioptra, an old surveying device An alidade A surgical speculum An instrument for... 615 bytes (111 words) - 14:02, 26 July 2015 |
Dioptra Island (Bulgarian: остров Диоптра, romanized: ostrov Dioptra, IPA: [ˈɔstrov diˈɔptrɐ]) is the conspicuous 290 m long in east-west direction and... 3 KB (232 words) - 19:16, 29 October 2023 |
the direct light from a star Cosmolabe – Ancient astronomical instrument Dioptra – Classical surveying instrument from the 3rd century BCE Equatorial ring –... 2 KB (516 words) - 20:59, 21 February 2024 |