Travelling Microscope is a precision instrument used in physics and engineering laboratories for making accurate measurements of small lengths, thicknesses, diameters, refractive indices, and other optical experiments.
Construction:
Heavy cast iron base with leveling screws for firm placement.
Two horizontal scales (X and Y axis) and one vertical scale (Z axis) for 3D measurement.
Microscope Tube:
Magnification: usually 10x to 15x with fine cross-wires in the eyepiece.
Rack and pinion focusing for smooth adjustment.
Measuring Scales:
Vernier scales with a least count of 0.01 mm (10 microns) or 0.02 mm.
Graduated brass/stainless-steel scales for accuracy.
Travel:
Microscope can move horizontally and vertically along precision ground rails.
Travel length: typically 150 mm (horizontal) and 100 mm (vertical).
Fine Adjustment:
Micrometer screw and slow-motion arrangement for delicate focusing.
Measurement of small lengths, diameters, and thicknesses with high accuracy.
Determination of refractive index of liquids using prism/tube experiments.
Used in Newton’s Rings and other optical interference experiments.
