MultiScale Micrometer Glass Slide for Microscope Calibration with 3 scales etched onto it:

1mm/100 divisions (10um)

10mm/100 divisions (100um)

10mm/200 Divisions (50um) - occasionally a batch would be 5mm x 100 divisions (50um)

10X WideField fn20mm Focussing Eyepiece with Reticle Horizontal Scale with crosshair.  Fits a 23.2mm (inner diameter) Eyepiece Tube.  This eyepiece is a focussing eyepiece which means it has a knurled ring at the top which, when rotated, extends the length of the eyepiece.  This ensures that the scale can be made to remain in focus at the same time as the subject under examination. It is a high quality composite lens eyepiece that gives a wider field of view compared with a standard fn18mm eyepiece. (fn = Field Number).  Suitable for use with many biological and materials upright microscopes.  Not suitable for stereo microscopes which have a eyepiece tube.  The reticle scale is held in place with a narrow threaded retaining ring inside the underside of the eyepiece.  Alternative reticle patterns can be supplied such as counting grids and object sizes.

Economy Particle Sizing Microscope Kit with Microscope, Reticle and Calibration Slide.  Ideal for manual particle sizing for particles ranging in size from 1 micron to 200 microns.  Magnification range 40X to 1000X.

10X Eyepiece with scale, focussing, FN20mm for use with the GX Microscopes Smart Series and GX Microscopes XPLPOLTEC-4 & 5.