272 



Mechanics oJ Solids (Statics and Dynamics). 



No. ftl 



51900. 1 : 10. 



51 901. 1 : 7. 



51 905 1 : 4. 



51 902. 1 : 10. 



51,900. Wedge Apparatus (Frick's), Figure (Fr. phys. Techn. I, 2, Fig. 2216 [I, Fig. 127]), 



with 3 different wedges and 1 balance pan 1. 4.0 



51,901. - - idem, of brass and iron, Figure, with wedge-guide (Fr. phys. Techn., p. 721) 



:> 1.902. --idem (Hartl'.s), Figure, for demonstrating the pressure exerted by both 

 sides of the wedge on the resistance-surfaces, with arrangement for equalising the iron 

 weight of the wedge and for showing the influence of sliding friction (Ztschr. f. d. phys. 

 u. c.hein. U., 5, 1892, p. 282, Fig. 1). Price, without weights 



There are given in: 3 equal-limb wedges of ratio 3 : 10, 4 : 10 and 5 : 10 of l>;i>'k in side, and 

 one unequilateral. red angular wedge with ratio of sides 3:4: ~>. 



Cl. 510, 5096, 

 807, 



3. 0.0 



4. 0.0 



