A vintage set of drafting compasses and pens produced by the Reifler Mathematical Instrument Company in Nesselwang, Germany. This company produced a large variety of draftsman’s tools. This A58 Model, which is housed in a velvet-lined, leatherette box, was used by Bill McAlpin, the designer of the neutron diffraction spectrometer used by B. Brockhouse for his Nobel prize-winning work as well as many other neutron spectrometers at Chalk River. The container is 28 cm long and 13 cm wide.
