Gunter, Edmund. 1581-1626. **5089a.71 The cross-staff, in three books; the first, containing its description, and the use thereof in taking of heights and distances; the second containing the use of the lines thereon in the measuring of all manner of all superficies [etc «| 3 the third, contains the use of the lines of numbers, sines, and tangents in dialling |etc.}, Added, an appendix, con- taining the description and use of a small (Continued)
-Cross-staff-