An eyepiece micrometer reticle places a graduated reference in the microscope image plane. It lets an operator measure particle lengths, fibre widths and small component features against a scale visible with the specimen.
Specify optical glass or fused silica, overall dimensions, thickness, pattern-side orientation and the clear aperture. Define transmission, reflectance or optical density at the working wavelength when optical contrast is critical.
The observer compares a feature with fixed divisions without moving a physical ruler onto the specimen. A stage micrometer establishes the specimen length represented by each division for the objective in use.
Calibrate eyepiece divisions against a stage scaleGraduated length controls coverage and pitch controls the available reference intervals. Finer marks can be harder to resolve at low contrast; line width and numbering should leave the specimen visible.
Specify contrast and viewing sideAn eyepiece micrometer reticle places a graduated reference in the microscope image plane. It lets an operator measure particle lengths, fibre widths and small component features against a scale visible with the specimen.
Choose a single scale for measurements along one direction. Choose crossed scales for two perpendicular directions or for measurements that must share a common origin. Rotate the reference or specimen so the measured feature follows the scale axis.
An eyepiece division has no fixed specimen value until calibrated. A stage micrometer supplies a known length at the specimen plane; a crosshair without graduations supplies an alignment reference, not a length scale.
Scale length, graduation interval, numbering, line width and a single or crossed layout define the visible reference. Disc diameter, thickness, seating face and pattern position define its fit in the eyepiece.
A patterned reticle disc for the eyepiece or measuring magnifier. Its physical scale geometry is separate from the specimen calibration established on the assembled microscope.
Graduations for calibrated visual length measurement.
Calibrated eyepiece divisions for feature-length comparison.
No. It is a physical distance in the reticle plane. Its specimen equivalent depends on the optical magnification and is established with a stage reference.
Keep a separate conversion for each objective and intermediate optical configuration. Nominal objective labels alone do not capture every magnification change.
Measure the reticle seat, thickness clearance and usable pattern field. The outside diameter of the eyepiece housing is not the reticle diameter.
Micrometer reticles introduce graduations into the viewing field for comparing lengths, spacing and displacement.
Define division spacing, scale length, numbering and reading direction. Calibrate the specimen value of each division in the actual optical configuration.
Division pitch, total scale length, numbering, eyepiece fit, magnification and film side.
The specimen scale changes with objective, zoom and optical configuration. Establish it with a stage micrometer and record the setup.