Stemi 508 Gemological Microscope
Stemi 508 Gemological Microscope
The Stemi 508 stereo microscope is Apochromatic with 8:1 zoom ratio providing excellent image contrast and color accuracy. This stereo microscope is a compact and reliable Greenough stereo microscope. The apochromatic optics provide superior images, while the microscope mechanics are designed for heavy workloads. The Stemi 508 stereo microscope offers better ergonomics than any other Greenough-type stereo microscope. The low viewing angle of 35º allows for a relaxed posture even after many hours of work. The gemological stand tips and swivels and features a leaver to change between brightfield and darkfield.
Viewing Head: 35º inclined ergonomic Greenough stereo microscope body. Viewing head rotates 360°. Interpupillary distance adjustment from 55mm - 75mm. Your choice of binocular or trinocular microscope body. Trinocular body has photo port 50/50 division and includes 0.5x c-mount adapter.
Detent: Click stops at 0.63x, 0.65x, 0.8x, 1x, 1.25x, 1.6x, 2x, 2.5x, 3.2x, 4x, 5x for repeatable measuring.
Eyepieces: Includes widefield 10x / 23mm focusing eyepieces. Eyepieces accept 26mm diameter reticle.
Objective Lenses: Zoom range of 0.63x - 5x.
Zoom Ratio: 8:1
Total Magnification: 6.3x - 50x. For alternate magnifications eyepieces can be changed and auxiliary lens added to stereo microscope. View magnification chart below for options. Maximum resolution 225 Lp/mm - 2.2µm.
Stage: Hardcoat anodized surface measuring 7.5" x 7.5" with mounting hole for gem clamp on both sides to customize gem clamp positioning. Lever to switch between brightfield and darkfield. Includes one gem clamp.
Stand: Specialized gemology base with carrying handle tilts and swivels.
Working Distance: 92mm.
Focusing: Coarse focusing.
Illumination: LED flexible arm with rheostat control for oblique illumination and 6v 30w halogen bulb with rheostat for transmitted brightfield/darkfield. 120 - 240v.
Size & Weight: 10" W x 12" D x 16" H, 15 lbs. Stand only.
Warranty: 1 year.
Auxiliary Lens |
Working Distance |
10x Eyepieces |
16x Eyepieces |
25x Eyepieces | |||
Magnification | Field Size |
Magnification | Field Size |
Magnification | Field Size | ||
0.3x |
287mm |
1.9x - 15x |
122.7mm - 15.3mm |
3x - 24x |
85.3mm - 10.7mm |
4.7x - 37.5x |
53.3mm - 6.7mm |
0.4x |
211mm |
2.5x - 20x |
92mm - 11.5mm |
4x - 32x |
64mm - 8mm |
6.3x - 50x |
40mm - 5mm |
0.3x - 0.4x |
233 - 90mm |
1.9x - 25x |
122.7mm - 9.2mm |
3x - 40x |
85.3mm - 6.4mm |
4.7x - 62.5x |
53.3mm - 4mm |
0.63x |
127mm |
3.9x - 31.5x |
58.4mm - 7.3mm |
6.3x - 50.4x |
40.6mm - 5.1mm |
9.8x - 78.8x |
25.4mm - 3.2mm |
1x (None) |
92mm |
6.3x - 50x |
36.8mm - 4.6mm |
10x - 80x |
25.6mm - 3.2mm |
15.6x - 125x |
16mm - 2mm |
1.5x |
53mm |
9.4x - 75x |
24.5mm - 3.1mm |
15x - 120x |
17.1mm - 2.1mm |
23.4x - 187.5x |
10.7mm - 1.3mm |
2.0x | 35mm | 12.5x - 100x |
18.4mm - 2.3mm |
20x - 180x |
12.8mm - 1.6mm |
31.3x - 250x |
8mm - 1mm |
View images captured with the Stemi 508 stereo microscope here.
S508-GM-B, S508-GM-T