6o Inflrumental InJiruSims 



Q H A p. III. 



Of the Ufe ^/Surveying 



Instruments. 



Gunter'i' Chain. 



H I S is the Chain that is gene- 

 rally made Ufe of by Survey- 

 ors, and contains in Length four 

 Poles, or 66 Feet, and is divi- 

 ded into 100 Links 5 each Link is therefor^ 

 7t4v Inches. This Chain is, for greater Eafe 

 in reckoning, divided into ten Farts, by pror 

 per Brafles, denoting 10, 20, gjp, 40, 50 

 jLinksj and back again from 50 to 10 thinks. 



The Surveying Scales. 



Fig. i.^'TpHE Scale more particularly 

 X adapted to Surveying, is on 

 one Side divided into fix equal Parts, each of 

 which Parts anfwers to a Gunur's Chain of 

 ICO Links: At the End of this Scale is an 



equal 



