Sentence:  Erra Pater" : / For he, by <WSD>Geometrick</WSD> scale, / Could take the size of "Pots of Ale" ; / Resolve by Signs and Tangents streight, / If "Bread" or "Butter" wanted weight; / And wisely tell what hour o'th' day / The Clock doth strike, by "Algebra." 
Meaning of the word marked with <WSD> tags:  Of or relating to geometry.