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Motic GM-171 Trinocular Stereo Microscope for Gemological Applications

UsedMoticMicroscopesUnited States

€3,720.25excl. VAT

In stock

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Optical system
Greenough
Observation tube
Binocular head
Inclination
45º inclined
Interpupillary distance
52-75mm
Diopter adjustment
On both eyepieces, +/- 5 diopter
All 26 specifications
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Specifications 26

Brands
Motic
New/Used
Used
Optical system
Greenough
Observation tube
Binocular head
Inclination
45º inclined
Interpupillary distance
52-75mm
Diopter adjustment
On both eyepieces, +/- 5 diopter
Eyepieces
Widefield WF10X/23mm
Objectives system
Zoom, ratio 6.7:1
Objectives
0.75X~5X
Working distance
110mm
Stand type
360º rotary base
Diaphragm
Iris diaphragm, adjustable aperture Ø41mm - Ø2mm
Head holder
For Ø76mm head
Focus mechanism
Coarse focusing system with tension adjustment
Focusing stroke
125mm
Incident illumination
Fluorescent 7W with Gooseneck adjustable
Transmitted illumination
Quartz Halogen 6V/30W with intensity control
Illumination features
Darkfield illuminator
Transformer
Internal
Power supply
100-240V (CE)
Accessories included
Dust cover, stainless steel wire stone holder, aluminium carrying case
Dimensions
LxWxH 391x236x505mm
Base
306x236mm
Column/Arm Height
268mm, 45º tilting arm
Net weight
8.2kg

Product description

Trinocular stereo microscope with 7.5X-50X zoom, brightfield/darkfield illumination for gemological analysis.

The Motic GM-171 is a trinocular stereo microscope designed specifically for gemological and precious mineral analysis. Key technical features include:

  • Optical system: Greenough design
  • Observation tube: Binocular with 45º inclination
  • Interpupillary distance: 52–75 mm
  • Diopter adjustment: ±5 diopters on both eyepieces
  • Eyepieces: Widefield WF10X/23 mm
  • Objective system: Zoom with a 6.7:1 ratio
  • Objectives magnification: 0.75X to 5X, providing 7.5X to 50X total magnification
  • Working distance: 110 mm
  • Stand: 360º rotary base with a 45º tilting arm (column/arm height 268 mm)
  • Diaphragm: Iris diaphragm with adjustable aperture ranging from Ø41 mm to Ø2 mm
  • Focus mechanism: Coarse focusing with tension adjustment, 125 mm focusing stroke
  • Illumination:
  • Incident: 7W fluorescent with adjustable gooseneck
  • Transmitted: Quartz halogen 6V/30W with intensity control
  • Includes darkfield illuminator
  • Power supply: 100–240 V (CE certified) with internal transformer
  • Accessories included: Dust cover, stainless steel wire stone holder, aluminum carrying case
  • Dimensions: 391 x 236 x 505 mm (L x W x H)
  • Base dimensions: 306 x 236 mm
  • Net weight: 8.2 kg

The combination of brightfield and darkfield illumination along with a wide zoom range makes this instrument suited to detailed gemological inspections.

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Yes. Every verified supplier states which service partners cover the instrument, and we list that alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 19 October 2026