336 



NEGBETTI AND ZAMBEA, HOLBOEN VIADUCT, E.G., 



FIG. 1548. 



FIG. 1517. 



1519 



1520 

 1521 

 1522 



1523 

 1524 

 1525 



1526 

 1527 



1528 

 1529 

 1530 



1531 

 1532 



FIG. 1524. FIG. 1525. 1533 



Plain Drawing Pen, with brass 



handle and protracting pin 

 from 



Ditto ditto, all Steel 

 Drawing Pens, with Ivory handle 026 

 Ditto ditto, with lift Brass joints 



to the blades, and Ivory handle 

 Drawing Pens, best German Silver 



lift joints and spring (fig. 1523) 

 Drawing or Bordering Pens, for 



very thick lines (fig. 1524) 

 Dotting Pen, with Ivory handles 



and Wheels (fig. 1525) . . 

 Road Pen ..... 

 Ditto ditto for Pencil . 

 Needle Holder, or Pricking Point 

 Ditto ditto, best improved (fig. 1529) 

 Map Meter or Opisometer, for 



measuring Curved lines on plans 



or charts (fig. 1280) see page 305. 



2s. 6d. 



Triangular Compasses, Brass 

 Ditto ditto, German silver, with 



shifting leg .... 

 Elliptical Compasses or Trammel 2 



F. (1. 



026 

 036 

 030 



046 



056 066 



10 6 



36 



10 



10 6 



16 

 10 6 

 10 6 

 030 

 036 



046 

 110 



1 10 

 440 



FIG. 1535. FIG. 1536. 



1534 Proportional Compasses, common Brass ... 12 6 



1535 Ditto ditto, with Hackwork Adjustment (fig. 1535) . 1 10 



1536 Ditto ditto, full divided, German Silver (fig. 1536) 1 12 6 



