The graduated eyepiece is used to measure the size of specimens and their structures in linear units: millimeters or microns. The eyepiece is installed in place of a standard 10x eyepiece. The graduated scale is located in the field diaphragm plane, with values of 0.1 mm. Eyepiece diameter: 30 mm.

Setup

Before measuring, the eyepiece scale must be calibrated for each objective magnification that will be used. This requires a calibration slide—a stage micrometer with a scale. For a stereoscopic microscope, we recommend using a calibration slide with a scale division of 0.1 mm. Place the slide on the stage, then focus the microscope on the scale. Rotate the eyepiece in the eyepiece tube until the slide and eyepiece scales are aligned parallel to each other.

Calculating the eyepiece scale value for each objective magnification

The calculation for each objective magnification is performed using the formula: E=TL/A, where: E is one division of the eyepiece scale; T is one division of the stage micrometer scale marked on the stage micrometer (0.01 mm); L is the number of divisions on the stage micrometer; A is the number of divisions on the eyepiece scale.

The resulting eyepiece scale division values for each objective magnification should be recorded.

Calculating the true linear size of an object

When measuring an object, first count the number of eyepiece scale divisions covered by the object. Then multiply the result by the scale value previously calculated for the objective in use. The resulting value is the object's true linear size.

Compatibility:

• MAGUS Stereo 7B stereoscopic microscope
• MAGUS Stereo 7T stereoscopic microscope
• MAGUS Stereo 8B stereoscopic microscope
• MAGUS Stereo 8T stereoscopic microscope
• MAGUS Stereo 7BH microscope head
• MAGUS Stereo 7TH microscope head
• MAGUS Stereo 8BH microscope head
• MAGUS Stereo 8TH microscope head