. . . . . . . . . . "The most easy and exact manner of resolving all sorts of triangles ... most necessary for all such as would attaine to the exact knowledg [sic] of fortification, dyaling, navigation, surveying, architecture ... : lately invented and perfected ... and convincingly demonstrated"@en . "Early works"@en . "The most easy and exact manner of resolving all sorts of triangles ... : most necessary for all such as would attaine to the exact knowledg [sic] of fortification, dyaling, navigation, surveying, architecture ... : lately invented and perfected ... and convincingly demonstrated"@en .