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A level staff, also called levelling rod, is a graduated wooden or aluminium rod, used with a levelling instrument to determine the difference in height between points or heights of points above a vertical datum. When used for stadiametric rangefinding, the level staff is called a stadia rod.
Rod construction and materials, Reading a rod & Classes of rods
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rod rods instrument level graduations mark target read staff imperial metric point levelling called used also one markings side colours
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| red | instance of | The target is a round or oval plate marked in quarters in contrasting colours | 0.80 | text |
| white in opposite quarters | instance of | The target is a round or oval plate marked in quarters in contrasting colours | 0.80 | text |
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