Automated System for Measuring and Recording Angular Deflection
Donald C. Peters, Claude C. Herrick · Review of Scientific Instruments · 1967
An instrument is described which is a simple, accurate, reliable, and inexpensive device for continuously measuring and recording angular position or deflection. Incorporated in a torsion-effusion apparatus it permits the visual observation of phase changes, deviations from molecular flow, and approach to equilibrium. The usual alignment problems associated with a lamp and scale are eliminated.