Observation chamber of the fine beam tube

Observation chamber for covering the e/m experiment (Helmholtz coils and narrow beam tube). Benefits Parallax-free measuring of turning radii of electrons Measuring of any turning radii of electrons Operation under normal lightning conditions Protection of the narrow beam tube due to less intensities required Equipment and Technical Data Covering box out of hard paper with observation window and connection openings Dimensions LxWxH (mm): 550 x 310 x 470 Mirror with scale