What's the best device for measuring angles, as an experiment for a fundamental physics lab at the university level? The first experiment in our fundamental physics lab is "Measuring & Measurement errors". Currently we have four devices: - rule (0.5 mm) - Vernier Caliper (0.02 mm) - Micrometer (0.01 mm) - Spherometer
We're seeking for a method/device to find angles with high accuracy. There are some complicated optical devices/methods as in theodolites, but we want it to be economical and freestanding: Something with an obvious physics/mathematics basic for training aims.