Exhibit 219 is a set of accessories:
Photo 1 shows a brass cylinder (2,5 cm diameter, 2,5 cm high)
Photo 2 shows a brass cylinder (2,5 cm diameter, 5 cm high)
Photo 3 shows an eyepiece (2 cm diameter, length 1,5 cm)
Photo 4 shows an eyepiece (2 cm diameter, length 3 cm
Photo 5 shows a thermoelectric rod (3,5 cm diam, length 15 cm)
Photo 6 shows 6 various sized rings
Photo 7 shows a conical bar of brass and iron
Photo 8 shows a wood handle with a threaded rod (total length 21 cm, handle diameter 2 cm, handle length 11 cm)
Photo 10 shows a thermometer support
Photo 11 shows a support (height 15 cm, distance between legs 21 cm) for a bell jar (diameter 22 cm and thickness 1 cm). This heavy metallic base has three legs and a tube for connecting to a vacuum pump which creates a low pressure inside the bell jar where water can then be seen to boil at room temperature.
Photo 12 shows two 1 MegOhm resistances in bad shape constructed by Gebr.Ruhstrat, Gottingen; (length 13 cm, cross section 6,8 cm by 6 cm)
Photo 13 shows two resistances consisting of wire wound on a cylinder and covered by insulating tape for which only the maximum current (50 mA) is indicated and not the resistance values. The ends are open to ease insertion into terminals (size 9 cm x 8,5 cm x 2 cm)
Photo 14 shows a small incomplete knife-type commutator switch on a ceramic base (size: 13,1 cm x 5 cm x 4,2 cm)
