MAGUS ND10R 10x/22mm (D 30mm) Eyepiece with Reticle and Diopter Adjustment

Eyepiece with reticle and diopter adjustment MAGUS ND10R 10x/22mm (D 30mm)
Magnification: 10x. Field of view: 22mm. Reticle with 0.1mm divisions

An eyepiece with a reticle is used to determine the size of samples and their structures in linear units (millimeters or microns), measure the areas of structures in the sample, and perform comparative analysis of particle counting. The reticle is located in the plane of the field diaphragm, with 0.1mm divisions. The eyepiece with reticle is installed instead of a standard 10x eyepiece. A paired eyepiece without a reticle is installed in the second eyepiece tube.

The eyepiece is compatible with microscopes that have a 30mm eyepiece tube.

Preparation

Before taking measurements, the reticle of the eyepiece must be calibrated for each objective to be used. For this purpose, a calibration slide is required: a stage micrometer with a scale. The minimum division is 0.01mm. The calibration slide should be placed on the stage, and the microscope should be focused on the measuring scale. The eyepiece should be rotated in the eyepiece tube until the scales of the slide and the reticle are aligned in parallel.

Calculating the reticle value for each objective

If you use low magnification objectives, you should calculate how many divisions of the integrated scale in the eyepiece fit into the reticle of the slide.
If you use medium and high magnification objectives, you should calculate how many divisions of the slide scale fit into the division of the eyepiece reticle.

The calculation for each objective is performed according to the formula:
E=TL/A, where
E – reticle division value
T – stage division value specified on the stage micrometer (0.01mm)
L – number of divisions of the stage micrometer
A – number of divisions of the reticle.

The resulting values for calculating the reticle division for each objective should be recorded.

Calculating the true linear size of an object

When measuring an object, you must first count the number of divisions of the eyepiece reticle that the object spans. The result is multiplied by the previously calculated reticle value for the selected objective. The resulting value will be the true linear value of the object.

Calculating the area of an object

To determine the area of the object's structure, count the number of reticle squares it covers. If the structure only covers part of a square, it must be determined in advance how this square will be considered in the final calculation: ignore it or add it to the result. The eyepiece with reticle can only be used for an approximate evaluation of the area; for precise calculations, image analysis software is recommended.

Particle counting

The eyepiece with reticle can also be used for comparative particle counting in the given area. First, the number of small particles in one square is counted and multiplied by the number of squares. Then, the number of large particles in the entire area is counted. The resulting counts are compared.

Compatibility:
MAGUS Bio 260T Biological Microscope
MAGUS Bio DH260 Biological Microscope
MAGUS Bio 270T Biological Microscope
MAGUS Bio 290T Biological Microscope
MAGUS Bio V360 Inverted Biological Microscope
MAGUS Lum 450L Fluorescence Microscope
MAGUS Metal V790 DIC Inverted Metallurgical Microscope
MAGUS Pol 890 Polarizing Microscope

Specifications
Lens material: optical glass
Magnification, x: 10
Field of view, mm: 22
Diopter adjustment: ±5D
Reticle division value, mm: 0.1
Eyepiece diameter, mm: 30
Eye relief, mm: 10