45, CORNHILI, E.G., AND 122, REGENT STREET, W., LONDON. 



343 



1632 



1633 



1634 



1635 



1636 

 1637 

 1638 

 1639 

 1640 

 1641 

 1642 

 1643 

 1644 

 1645 

 1646 

 1647 



1648 



1649 

 1650 

 1651 

 1652 



Railway Curves, in Cases : 



Set of 25 .... 



Set of 50 . 



Set of 100 .... 

 Ship Curves, in Cases : -(fig. 1633) 



Set of 15 .... 



Set of 40 .... 



Set of 80 



Cardboard Peartree Vulcanite 



11 6 100 1 15 



130 1150 3100 



220 350 5150 



12 6 



1 15 

 3 10 



1 10 

 3 17 



7 10 







FIG. 1638. FIG. 1631. 



Ebonite Scales, Rules, Set Squares, Curves, Slopes, and Batters for Railway 



Embankments, &c., at a slight advance on the price of Boxwood. 

 Mitfbrd's Double Set Of Ivory Pocket Scales, arranged for Engineers, Architects, 

 &c. The length of each scale, six inches ; the form of a single scale, a right-angled 

 triangle, two making a square or set ; the two sets are packed in a leather case, and 

 the ends of each scale stamped with its value. The triangular form enables all the 

 scales to be conveniently placed on the edges. The scales are seventeen in number 

 fully divided, viz., 2, 3, 4, 6, 8, and 10 chains to the inch ; 66 feet and 6 inches to 

 the mile ; T ^, &, T \j, , , , f-inch, and French Metre ; the Ordnance scale and a 

 line of chords ; a number of constants carefully worked out, are placed on the faces 

 of each scale. 



Price for complete set, in case 



Horn Centre Pieces /. per doz. 



Drawing Pins, Brass . . . . . Is. 

 Ditto ditto, German Silver . . . . Is. 6d. 

 Drawing Pencils, all kinds and colours. To order. 

 Small Pencils for Mathematical Instruments, per doz. 



Crayon Holders from 



Drawing Boards . . 5s. 6d., 8s. 6d., 12s. 6d. 5 15s. 

 Black Board Compasses, Wood and Metal . 

 Tracing Paper . . . .per sheet, 3d., 4d. 



Ditto Cloth per yard 



Pen Machines for making or mending Quill Pens 

 Cutting Compasses of Steel, with Screw adjustment 



and three knives, for cutting Circles of Cardboard to 



4 inches diameter ....... 



Paper Weights for holding drawings or papers flat on 



a table. Circular 



Ditto ditto, Oblong, leather covered .... 

 Brass Clamps to fasten Straight-edge to drawing board 

 Erasing and Pen Knives . ... Is. 6d. 

 Lamps with Shades for Drawing Table or Board, either 



for Gas, Oil, or Paraffin 



020 



10 

 



3 





 

 











1 











1 



5 

 12 



1 



variable. 



12 6 15 



140 



060 







2 10 



Engraving name on Case of Drawing Instruments with date, 2s. 6d. to 5s. ; Crests 



or Monograms, 5s. to 10s. 6d. ; Presentation Inscriptions varying according 



to the Length and Style of engraving, ornamentation, &c. 



