58 MENSURATION OF 



playne mesure. and depe mesure. First foryi 

 shewe we hegh mesure. fat es to say howe any 

 thynge fat has heght may be met howe hegh it 

 es. and f is may be done in many maneres. first 

 f erfor schewe howe it may be done by f e quad- 

 rant. When you wille wite f e heghte of any 

 thyng fat you may negh. biholde fan f e heght 

 of fat thyng by bothe holes of f e quadrant and 

 come toward and go froward til f e perpendicle 

 fat es to say f e threde whereon f e plumbe henges 

 falle vpon f e mydel lyne of f e quadrant. fat es to 

 say f e 45 degre. fan take als mykel lande behynde 

 ye as fro f ethen to f e erthe and marke wele fat 

 place, fan mete howe many fete are bytwene f i 

 mark and f e fondement of fat thyng whos heght 

 you sekest. and sekirly so many fote heght it es. 

 Also when you wilt wite f e heght of any thynge 

 by f e quadrant, biholde f e heght of fat thyng by 

 bothe f e holes, and byholde vpon what place of 

 fe quadrant fe perpendicle falles. for oufer it 

 wille falle on j? e vmbre toward or on f>e vmbre 

 froward. and if it falle vpon ]?e vmbre toward 

 biholde vpon whilk poynte of fat vmbre fe 

 perpendicle falles. fan mesure fe distaunce fat 

 es to say f e space betwene ye and fat thyng 

 whos heght you sekes, and when you has so done 

 fan multiply you by 12 fat same mesure. fan al 

 fat comes of fat multiplyeng departe you by f e 

 nonmbre of f e poyntes of f e vmbre. and to alle 

 fat comes f ereof set f e quantite of fin heghte. 

 and set al fis togydere. and fan you has fe 



