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David White Realist TR-300 4.5, Быстрый старт

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David White Realist TR-300 4.5 Скачать руководство пользователя страница 1

Using the Transit 

David White Instruments Realist TR-300 4.5" Transit 
 
 
 
 
 

 
Telescope in 
normal reading 
orientation 
 
Cross-hair focus 
 
 
 
 
Compass 
 
 
 
Upper tangent 
screw 
 
Upper clamp 
 
 
 
 
 
 
 
Vertical clamp 
 
 
Focus 
 
 
Vertical tangent 
screw 
 
 
Lower clamp  
& tangent screw 
 

 
 
 
 
 

Vertical circle& 

vernier 

 
 

Plate levels 

 

Capstan screws: 

top 

bottom 

 

Horizontal circle & 

vernier 

 

Leveling screws 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Upper clamp & 

tangent screw 

Содержание Realist TR-300 4.5

Страница 1: ...normal reading orientation Cross hair focus Compass Upper tangent screw Upper clamp Vertical clamp Focus Vertical tangent screw Lower clamp tangent screw Vertical circle vernier Plate levels Capstan screws top bottom Horizontal circle vernier Leveling screws Upper clamp tangent screw ...

Страница 2: ...h the plate level you can level to greater accuracy with the telescope bubble Bring the telescope over a pair of leveling screws and center the telescope bubble by using the vertical clamp and tangent screw Rotate the telescope 180 in azimuth If the telescope bubble does not come to the center bring it halfway to the center by turning the vertical Adjusting a plate bubble level After centering the...

Страница 3: ... bubble level but the remaining index error see below is probably best resolved by making two readings normal and reversed 6 Get the transit reading magnetic or true azimuths though absolute accuracy is limited by the compass to about a degree with transits and theodolites the absolute accuracy is not as important as the relative accuracy of angles by Using the upper clamp and tangent screw to set...

Страница 4: ...fference is the index error which should remain reasonably consistent during a given use so you could also add this index error to the normal reading instead of making two readings but it s probably a good idea to check this on multiple readings Reading distances using the stadia rod If reading is at level the stadia readings can be converted to distances by subtracting the lower from the upper st...

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