1. Tectonicon : briefly shewing the exact measuring and speedy reckoning all manner of land, squares Creator: Digges, Leonard, d. 1571? Published / Created: 1656. Call Number: QA465 D43 1656 Image Count: 31 Found in: Beinecke Rare Book and Manuscript Library > Tectonicon : briefly shewing the exact measuring and speedy reckoning all manner of land, squares ... &c. : furthermore declaring the perfect making and large use of the carpenters ruler ...