Scale Diameter: 6 inches (approx. 150 mm), usually divided into minutes of arc with a least count of 1′ or 0.5′ using a vernier.
Main Components:
Collimator: With adjustable slit and lens for producing parallel rays of light.
Telescope: Mounted on a movable arm, fitted with an eyepiece and cross-wires for accurate focusing.
Prism Table / Grating Table: Highly leveled, rotatable and with leveling screws for mounting prisms or diffraction gratings.
Circular Scale: 6-inch diameter, graduated, with two verniers placed diametrically opposite for error elimination.
Fine Adjustment Screws: For precise rotation and alignment.
Applications:
Measurement of refractive index of prisms.
Determination of wavelength of light using diffraction gratings.
Optical experiments involving angular measurements.
Material & Finish: Heavy cast base, well-polished brass or modern powder-coated metal body, anti-reflection optics.
