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Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 1st May 1952

SKU 53930017301
4.5
Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 1st May 1952
Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 1st May 1952
Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 1st May 1952
Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 1st May 1952
Description

1st May 1952

is rising to kiss a lady

The entomologist and artist Maria Sibylla Merian travelled to Surinam in South America from 1699-1701

Plate 3 from Histoire anatomique et physiologique d'un organe de nature vasculaire dÚcouvert dans les cÚtacÚs

Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 1st May 1952Plate 24 figure 3 from the paper 'On the construction of specula of six feet aperture; and a selection from the observations of nebulae made with them', by William Parsons, 3rd Earl of Rosse, Philosophical Transactions of the Royal Society, volume 151 (1861) pp. 681 746. A rear view of the cast iron grinding tool used to produce the speculum (mirror) of the reflecting telescope at Birr Castle, Parsonstown, Ireland. The circular tool is shown suspended

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