Page:The slide rule; a practical manual by Pickworth, Charles N.djvu/4

 ADVERTISEMENTS The Brunsviga CALCULATOR Is not an adding machine, but it will do any calculations such as are usual —for instance, in Cotton Mills, Grey Cloth Manufactories, Calico Printers, Doublers, Finishers, Dye Works, Bleachers, etc. etc. It will make up Length-notes, extend by pence and pence fractions, in vulgar or deci- mal fractions, calculate averages, percentages, costs, wages, dividends, convert foreign measures and currencies into English and 7>iceversa much quicker than any expert; in- > fallibly accurate and without any brain fag. Apply for free specimens of textile work that can be done by the BRUNSVIGA A Few Examples : 12,435 yards @ 3^d. = ^17016s. 5d in 5 Seconds. 11,778 yards costal, 125— Cost per yard = 24"96d 10 ,, 1,010 yards («)3-663d. per 20 yards = ^0 15s. 5d 5 1,235 yards @ 1/5 per 40 yards = £'2 3h. 9d 3 ,, Difference between ^465 and .£.595 = 27 -90% 10 5 /36* 3 /sn 9 /»» u /wh ls /m 8 /m 19 /m = 3 ' 250 yards - 1 Wh . ole . 3,250 yards @2*' = £88 0s. 2d. hSwnnT less 2 = £32 3s. 8d. J 18 Seconds - @ 25-15 into Francs 809*37 Apply for Booklet 32, showing specimen Calculations and Testimonials. Special Booklet for Mining and Surveying Work also sent free on application. DYKES BROS., 4 Albert Sq., MANCHESTER 11 Royal Exchange Square, GLASGOW and 75B Queen Victoria Street, "Hornsby House," LONDON, E.C. SPRING BOWS WITH NEEDLE POINTS No. 503p CASE, 6/7 POST FREE V.B- SLIDE RULES The Largest and most Complete Stock in the World PRICES— From 1/- to 60/" Full Size Illustrated Price List Post Free ♦«*♦+«♦««♦♦*♦♦♦♦♦♦♦ Albert E. Mallandain Head Office— 51 CHEAPSIDE LONDON, E.C. Works and Factories: BERMONDSEY, S.E,