Backdated Oct 11, 2016:

I printed out my first part: wheel C, which contacts Drum D and aids in the calculation of neutron time-of-flight. Its shown here with its o-ring attached.

Since the neutron under study is traveling at a known speed and its path is being drawn on a scale diagram of the system under test the operator can keep track of of the neutron's time-of-flight using indicators inscribed on this wheel. The ratios between the radii of this wheel and drum D (two settings are available, fast and slow) provide the coefficient to determine time using the following equation: