276 



Mechanics of Solids (Statics and Dynamics). 



No. :>1 1136 



51939. 1:8. 



51941. 1:9. 



51.936. Model of a Roberval Weigh-bridge, Figure ................. 1. 



51.937. Model of a Roman Balance, Figure, beam of wood with steel axis, clip and jockey 

 weight of metal, with weigh pan ........................ 0. 



51.938. Roman Balance, Figure, for carrying 25 kg, with 2 hooks, entirely ((instructed 



of iron, with steel knife edges, calibrated and suitable for practical use ...... 0. 



51.939. Model of a Platform Weighing Machine, Figure (Trapeze balance after Quintenz) 1. 



51.940. -- idem, different form, Figure .................... . 1. 



51.941. - - i (1 c m, entirely of metal, with balance pans on the rods for explaining the dif- 

 ferent lever conditions, Figure ........................ ; 2. 



r .l,!t42. Centrifugal Railway, with wood ball, Figure (Fr. phys. Techn. I, 2, Fig. 3188) 0. 

 r>!,!13. Centrifugal Railway, with small loading carriage. Figure ........... l. 



Cl. 5523, SS.M!. 

 .MK. 600, 



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