41. Joshua Habermel ( : de : Erasmus Habermehl ) created a theodolite with a compass and tripod in 1576. 42. A theodolite is mounted on its tribrach containing four thumbscrews, or in modern theodolites, three for rapid leveling. 43. A theodolite is mounted on its tribrach containing four thumbscrews, or in modern theodolites , three for rapid leveling. 44. By setting a theodolite on the top of the pillar, accurate bearings to nearby trig points could be taken. 45. Using the gun flash, the flash crew would determine a bearing to the gun using a theodolite or transit. 46. Now Mason began its survey using a photo-theodolite and stereographic techniques, laboriously collecting great quantities of data. 47. It was notable as being the equal of the great theodolite created by the renowned instrument maker, Jesse Ramsden. 48. A theodolite can be considerably more accurate if used correctly, but it is also considerably more difficult to use correctly. 49. The first radiosondes were observed from the ground with a theodolite , and gave only a wind estimation by the position. 50. The builder's level is sometimes mistaken for a transit theodolite , but it measures neither horizontal nor vertical angles.
