Autocollimating telescope goniometer : POD068040

Principle:
The goniometer is mainly used for experiments on prism or grating deviation.

Characteristics: the goniometer is fitted out with one auto-collimating telescope & one collimator.
It is provided with one high-density Flint prism, one prism-holder plate, 2 gratings (300 and 600 lines/mm) and Power Supply. Accuracy: 1 minute of Arc.

Collimator : adjustable to infinity, including one achromatic lens, Ø 30 mm, & one source slot, adjustable by knurled screw.

Auto-collimating telescope: including one achromatic lens & one sliding eyepiece. Also including one reticle & mirror device with 6V ligth, enabling auto-collimating experiments.

Main Experiments:
• Measurement of the prism angle
• Measurement of the minimum of deviation
• Measurement of an index
• Prism & grating spreading curve
• Focometry