NOTE. 



In selecting instruments from catalogues, engi- 

 neers should not be led so much by a simple com- 

 parison of prices, as by the advantage offered in 

 superior merits, working capacity, and preservation 

 of fine qualities in case of severe treatment. We can 

 cite instances, where transits and levels of our man- 

 ufacture had severe falls, resulting without injury to 

 any part of instrument not even disturbing the 

 adjustments. 



A larger outlay of $1O or $2O 111 the purchase 

 of a superior article is a great saving in time and 

 expense in the end. 



120 



