58 MENSURATION OF 



playne mesure. and depe mesure. First foryi 

 shewe we hegh mesure. J?at es to say howe any 

 thynge Jmt has heght may be met howe hegh it 

 es. and J?is may be done in many maneres. first 

 J?erfor schewe howe it may be done by pe quad- 

 rant. When you wille wite pe heghte of any 

 thyng j?at you may negh. biholde J?an pe heght 

 of J?at thyng by bothe holes of pe quadrant and 

 come toward and go froward til pe perpendicle 

 f>at es to say pe threde whereon pe plumbe henges 

 falle vpon pe mydel lyne of pe quadrant. J?at es to 

 say pe 45 degre. J?an take als mykel lande behynde 

 ye as fro fethen to pe erthe and marke wele f>at 

 place. J?an mete howe many fete are bytwene fi 

 mark and pe fondement of J?at thyng whos heght 

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

 Also when you wilt wite pe heght of any thynge 

 by pe quadrant, biholde pe heght of J?at thyng by 

 bothe pe holes, and byholde vpon what place of 

 pe quadrant pe perpendicle falles. for ouJ?er it 

 wille falle on pe vmbre toward or on pe vmbre 

 froward. and if it falle vpon pe vmbre toward 

 biholde vpon whilk poynte of j?at vmbre pe 

 perpendicle falles. J?an mesure pe distaunce J?at 

 es to say pe space betwene ye and J?at thyng 

 whos heght you sekes, and when you has so done 

 J?an multiply you by 12 j?at same mesure. J?an al 

 J?at comes of J?at multiplyeng departe you by pe 

 nonmbre of pe poyntes of pe vmbre. and to alle 

 J?at comes J?ereof set pe quantite of ]?in heghte. 

 and set al j?is togydere. and J?an you has pe 



