RecordTheodolite< 1 of 1 > Back made in Paris
TheodoliteA theodolite is a surveying instrument for measuring horizontal and vertical angles. This brass example was made in Paris around 1720 by Nicholas Bion, scientific instrument maker to the French king. The plain theodolite has four fixed sight vanes, a pivoted alidade with two sight vanes and a central compass marked with 16 points of the compass. The ball and socket joint is for mounting on a staff underneath so the instrument can be used vertically. Nicholas Bion wrote 'Traite de la construction et des principaux usages des instrumens de mathematique', an important text published in Paris in 1709 and translated into several languages. Record detailsTo search on related items, click any linked text below.
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