Land-surveying. Obs. [f. WAD v.2 + -ER1.] One who is engaged in determining a ‘wad’ or line of direction.

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1610.  W. Folkingham, Feudigr., II. iv. 53. If out of sight … place two Assistants, the one at the marke, and the other at the eminentest Medium, and then your selfe standing at … the station giuen, and the first Assistant erecting some visible obiect, waft the Wadders into the Wadd.

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