A boke named Tectonicon briefely shewynge the exacte measurynge, and speady reckenynge all maner lande, squared tymber, stone, steaples, pyllers, globes. [et]c. Further, declaringe the perfecte makinge and large vse of the carpenters ruler, conteyninge a quadrant geometricall: comprehendinge also the rare vse of the squire. And in thende a lyttle treatise adioyned, openinge the composicion and appliancie of an instrument called the profitable staffe. With other thinges pleasaunt and necessary, most conducible for surueyers, landemeaters, ioyners, carpenters, and masons. Published by Leonarde Digges gentleman, in the yere of our Lorde. 1556.

Howe by the lyne of Leuell to forsee whether the water of any springe or head is possible to be brought to a place apointed, and also to iudge the hole∣somnes of it. THE XVI. CHAPTER. (Book 16)

YE shall go to the head or spring, and set your Ruler to your eye (being in height equall with the water) so y^e the fyne corde and plummet fal precisely on the line of Leauell. Nowe yf thorow the syghtes, ye may se abo∣ue the place, knowe and iudge the water possible to be brought, yf your syght fall vnder, impossible. It co∣meth communely to passe when the place to the whiche ye woulde haue water conueyed, is of any great distaunce from the heade, then hylles, valleyes, and suche lyke impedimentes lette the lyne vysuall to haue his free course: wherefore this remedy is prouided. At the heade of the springe, ye shall loke thorow the syghtes (as before) and note a marke in the next hyll towarde the place, then go to y^e marke: in lyke maner obserue there an other in some hyll: so forthe vntyl by any of them ye may perceyue the place desyred. If then your syght running through the pinnes of your ruler, (the threde euer fallinge on the lyne. n. o.) excede that place, the cōueinge of your water is pos∣sible otherwise not. Nowe by the waye brieflie ye shall be enstructed howe ye maye knowe the holesomnes of water.

TAke a cleane pot and put water in it:* 1.1 so set it on the fyre: after a little boiling, poure it owte: if thē no filthie remaine in the bot∣tome of the potte, it maye be iudged the houlsomer. Or thus. Let fall droppes vpon metel, or rather on glasse (any of them beinge polished) and suffer that to drye by it selfe: if after there remayne no spot or sygne, it is a good token. Moreouer, if your water be swete, pure, clere, light, or of littel weight, it followeth y^e water to be hole∣some for the vse of man.

Of the line of Heigt.

WHen so euer the threde and plommet do chaūce iustly on the heigt which is n, p: the altitude or height that ye see is euen with the distāce from the Middle of your fote to y^e nether parte directly vnder the toppe equal with your standinge, addinge the heigt of your eye downewarde, Know that ye must euer stande vpright with body and necke, your fete iuste to gether, the one eye closed. &c.

The line of vpright Altitudes.

IƲdge also any thing plumbe vpright when the thickenes of your Ruler. i. l. is closely theron, the plummet then at libertie, fallynge on. q. n, named the line of Heightes vpright. Nowe foloweth the vse of the Scale.

Notes

• * 1.1

  How good water is kno∣wen.