260 



General Mechanics. 



No, 



51 822 B. 1:6. 



51 822 A. 1:6. 



3; 



f- 



51 824 b. 1:4. 



51 824 c. 1:4. 



51823. 1:10. 



51.822. Circular Motion Diagraph (Salcher's), Figs. A and B (Ztschr. f. d. phys. u. chem. U., 



17, p. 72), for the composition of two uniform circular motions 10. o. <> 



Fig. B shows some of the curves resulting from the use of the apparatus. 



51.823. Apparatus for demonstrating the Projection Theory (Cosine Theory) of Mechanics 

 (Grimsehl's), Figure (Ztschr. f. d. phys. u. chem. U., 17, 1904, p. 262; Hofler-Poske, 

 Oberstufe, Fig. 21) 



51.824. Apparatus for the Parallelogram of Forces and the Pendulum Laws (Weinhold's) (\\ '. 

 D., Figs. 69 A, B, C and 93 [62 A, B, C and 86]) 



Single prices: 

 51,8-24 a. Oak Stand (W. D., Fig. 69 B [62 B]), with hooks for pendulums i 0. 12. 



2. 0. 



2. 5. 



.. 2 Rollers on cramps (W. D., Fig. 69 A [62 A]), Figure 



51,8-24 c. 13 Double-hook Weights (W. D., Fig. 69 C [62 C]), each 50 g in weight, with 2 cords, ea -h with 1 T-hook 



and 1 double hook, Figure 



.-.l.s-24 ,1 3 Brass Balls and 1 Wood Ball on double cords (W. D., Fig. 93 [86]), for explaining the laws of 



the pendulum ........................................ 0. 3. 



.M.s-2.".. Parallelograms for above, of pasteboard, graduated (W. 1)., p. 83 [75]) ......... l'."'l> 0. 0. 7 



51,82. Aluminium Ring and 3 Silk Threads with hooks for Varignon's experiment on the 



parallelogram of forees (M. T., Figs. 912) .................. 0. 1. 



T. Wood Rod, Figure, for the parallelogram of forees (M. T., Fig. 11; Ztschr. f. d. 



0. 15. 



0.1, V II 



phys. u. ehem. U., 15, 1902, p. 9) 



0. 0. in 



I'l. 4?:.. 17. 



477. I7H, Mil. 



