OF WEIGHTS, ETC., OF METRIC SYSTEM. 



830. Hand, or Decimetre, solid .... 



832. HAND, OB DECIMETEE, divided with hinge so as to fold . . 



87 





 



833. LINK, OB DOUBLE DECIMETBE, bevelled, graduated to half millimetres, scale 



of three links, with slide . . . . . 060 



834. JSsTHEsroMETEE, for measuring sensation . . . 110 



835. THE ANGLO-FBENCH READY RECKONEB OB GUIDE TO THE METBIC SYSTEM 



with comparative tables of capacity, weights, and lineal measure. By R.Eickard, 

 Professor of Mathematics, at King Edward's School, Birmingham 010 



FIG. 84G. 



SUN DIALS 



Vertical and horizontal, adapted to every position and latitude, of various forms. 



836. Magnetic Dials, for the pocket, suitable for any latitude, in neat polished hard- 



wood box, with cover and best agate cap (fig. 836), p. 89, 2-inch. C 5 



837. MAGNETIC DIALS, in polished mahogany case . . . 056 



838. MAGNETIC DIALS, in bronzed round metal case . . . 066 



839. MAGNETIC DIALS, plated or gilt, 5s. 6d. and 7s. 6d. extra. 



The above are handy and strong, and well suited for travellers ; a stop to either Is. extra. 



840. Universal Sllll Dial, for any position north or south of the line, with folding arc 



and gnomon, by which it is set at pleasure to any latitude (fig. 840), p. 89, in 

 morocco case, 23-inch, divided circle, 140; 3-inch., 1 60; 3|-inch. 



1 14 



842. UNIVEBSAL SUN DIAL, with two levels, adjusting screws, bar needle agate cap and 

 stop, divided circle, 2|-inch., 2 10 ; 3-inch., 2 18 ; 3^-inch. 380 



