Mechanics of Solids (Statics and Dynamics). 



265 



51 850. 1 : 16. 



51 851. 1 : 15. 



51 851 b. 1:8. 



Mechanics of Solids (Statics and Dynamics). 



51.850. Collection of Apparatus for demonstrating the Laws of Mechanics, Figure . . . 



The following are included in the above price: 1 Oak Frame, 1 m high and 1 m wide; 1 Inclined 

 Pl'ane; 1 Wedge Apparatus; 2 Weigh Pans; 2 Aluminium Levers with steel axes and steel pins passing 

 through, one firmly fixed, the other arranged for suspending; 1 Set Pulley Blocks with 2 blocks and 

 3 pulleys arranged in series; 1 Tackle with 3 pulleys; 1 Arbor Wheel with cramp; 2 Disc-shaped 

 Pendulums of equal length, hanging in various planes, with swivel for adjusting the length; 3 Len- 

 ticular Pendulums of 90, 40 and 10 cm length, with swivels for adjusting; 3 Pulleys with cramps 

 (W. D., Fig. 69 A [62 A]); 1 Loose Pulley, of aluminium, with steel axis, brass bow and with 1 hook; 

 1 Set of Weights with iron weights of 50 g to 5 kg; 1 Set of Double-cheek Weights, each with 

 20 weights of 100 g and of 50 g. 



51.851. Collection of Apparatus for demonstrating the Laws of Mechanics, Figure, con- 

 sisting of the following apparatus, these pieces of apparatus being also supplied singly 

 at the prices given: a, b, d 1, d 2, e, f, g 1, h m 



(a) Frame, of oak, 1 m high, 1 m wide, with small hooks screwed in (W. D., Fig. 69 B 



[62 B]) 



(b) 1 Lever, of aluminium, with steel axis and with steel pins passing through at equal 



intervals apart, lacquered in two colours, with metal bow, on cramp, Figure 



(c) Pulleys, aluminium, with steel axis and brass bow: 



1) With 1 hook Bach 



2) With 2 hooks Each 



s. d. 

 9. 0.0 



5.18.0 

 0.12.0 

 0. 8.0 



0. 2.0 

 0. 2.6 



