| 31. | This instrument and his two great theodolites are described in the account of the Principal Triangulation by.
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| 32. | The new observatory design called for a stone building, with an attached tower containing the theodolite.
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| 33. | The automatic reference system ( ARS ) eliminated the theodolites previously used to lay and orient the missile.
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| 34. | The total station is a development of the theodolite with an electronic distance measurement device ( EDM ).
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| 35. | In the early part of the 20th century, Heinrich Wild produced theodolites that became popular with surveyors.
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| 36. | Wires were suspended down each shaft from which the centre line was determined by means of a theodolite.
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| 37. | The main survey instrument from 1802 for the primary triangles was a Great Theodolite made by William Cary.
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| 38. | A theodolite is used to measure the angle between indicators on the two ends of the subtense bar.
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| 39. | In 1861 he invented a straight line surveying instruments, especially the theodolite, whose construction he simplified.
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| 40. | Initially the company produced scientific apparatus, including microscopes, heliostats, cathetometers, theodolites and arc lamps.
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