Metallurgical Microscope TH-M302/TH-M302BD
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Metallurgical Microscope TH-M302/TH-M302BD

Model: TH-M302/TH-M302BD

TOP INSTRUMENT TH-M302/TH-M302BD Metallurgical Microscope is suitable to observe surfaces of opaque object .It is equipped excellent UlS optical system and modularization function design so that update system expediently and achieved polarization, dark field observation.Compact and steady main frame body is embodiment for the shock resistance. The ideal ergonomic design is adopted in this unit and has easier operation and wider space. This is ideal optical instrument for micro observation in metallographic structure and surface morphology. It is suitable for research in metallography, mineralogy, precision engineering, etc.
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  • TH-M302/TH-M302BD

  • TOP


  • Excellent infinity optical system, excellent optical performance.

  • Compact and stable high-rigidity main body fully reflects the anti-vibration requirements of micromanipulation.

  • Large-stroke mechanical mobile loading platform is suitable for microscopic observation of large samples or rapid detection of multiple samples.

  • Modular functional design can facilitate system upgrade.

  • The ideal design that meets the ergonomics requirements makes the operation more convenient and comfortable, and the operation space is wider.

Product Details:

  • Observation system

The trinocular observation tube can freely switch between visual observation and microscopic photography. It is inclined 30°, there is no need to lower your head or look straight during the operation, which can effectively release the operatorundefineds neck and shoulders. The eyepieces field is up to 22mm, and eyepath can be added.


  • Mechanical Stage

The large-stroke mechanical moving stage is suitable for microscopic observation of large samples or rapid detection of multiple samples.

Size: 280mm*270mm

Moving range: 204mm*204mm


  • Epi-illumination system

Built-in field of view diaphragm, aperture diaphragm, (yellow, blue, green, frosted glass) filter conversion device, push-pull analyzer and polarizer

TH-M302: 6V30W halogen lamp, brightness adjustable

TH-M302BD: 12V50W Halogen lamp, adjustable brightness


  • Professional infinity lan achromatic objective

Excellent imaging, greatly improving image resolution and clarity


  • Dark Field Observation (for TH-M302BD)

Equipped with high-quality bright and dark field objectives and dark field lighting device, avoid the stay light of illumination system and improve the image quality in the dark field.

  • Back-illuminated scientific research imaging system

6 million-20 million pixels optional






Eyepiece tube

Trinocular inclined 30°, can be shot in 100% light flux.


Wide field WF10X(field number:Φ22mm)

Infinity plan achromatic objective

TH-M302 Equipped with bright field objectives

TH-M302BD Equipped with bright & dark field objectives

PL L5X/0.12 Work distance: 26.1mm

PL L5X/0.12 BDWork distance:26.1mm

PL L10X/0.25Work distance:20.2mm

PL L10X/0.25 BDWork distance:20.2mm

PL L20X/0.40Work distance: 8.8mm

PL L20X/0.40 BDWork distance: 8.8mm

PL L50X/0.70Work distance: 3.68mm

PL L50X/0.70 BDWork distance: 3.68mm

PL L80X/0.80Work distance: 1.25mm

PL L80X/0.80 BDWork distance: 1.25mm


Quintuple (Backward ball bearing inner locating)

Epi-illumination system

6V30W halogen and brightness adjustable

12V50W halogen and brightness adjustable

Integrated field diaphragm, aperture diaphragm and (Y,B,G, ground glass) switching device. Push-pull type analyzer and polarizer.

Focus system

Coaxial coarse/fine focus system, with tension adjustable and limit stopper, minimum division of fine focusing: 0.7μm.


Mechanical stage, overall size: 280mm*270mm, moving range: 204mm*204mm

Optional accessories


Sort/Technique parameter


Dividing eyepiece(field number:Φ22mm), 0.10mm/Div


Equipped with bright field objectives

Equipped with bright & dark field objectives

PL L 40X/0.60 Work distance: 3.98mm

PL L 40X/0.60 BDWork distance: 3.0mm

PL L60X/0.70Work distance: 2.08mm

PL L60X/0.70 BDWork distance: 1.65mm

PL L100X/0.85Work distance: 0.40mm

PL L100X/0.85 BDWork distance: 0.40mm


Mechanical stage, overall size: 250mm*230mm, Move range:154mm*154mm

CCD Adapter



0.5X with dividing 0.1mm/Div


USB output: USB2.0 USB3.0 5.0M/6.0M/10.0M/14.0M/20.0M pixel

HDMI output: 2.0M/5.0M/8.0M/14.0M pixel

Digital camera adapter

CANON(A570, A610, A620, A630, A640, A650, EF) , NIKON(F)

To Make The World Closer To The Truth
ZHEJIANG TOP INSTRUMENT CO.,LTD., as a subsidiary of TOP Cloud agri, is a high-tech enterprise specializing in the R&D, manufacturing, sales for laboratory equipments, and provision of comprehensive laboratory solutions.


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