1、 Purpose:
Used for identifying and analyzing the microstructure of various metals and alloy materials, widely used in factories or laboratories for casting quality assessment; Inspection of raw materials or analysis of metallographic structure after material processing; And conduct research on surface phenomena such as surface spraying.
This instrument can be used with a photography device for microscopic photography.
2、 Specifications
1. Objective lens

category	Magnification factor	Numerical Aperture (N．A)	System	work distance (millimeters)
Achromatic	10×	0.25	shield	7.31
Half flat field achromatic objective lens	40×	0.65	shield	0.66
Achromatic	100×	1.25	oil	O.37

2. Eyepiece

Category	magnification	Field of view diameter (mm)
Flat field eyepiece	10×	18
	12.5×	15

3. Magnification factor: 100 ×~1250 × 6. Coarse focusing range: 7 millimeters
4. Mechanical cylinder length: 160 millimeters 7. Mechanical worktable: 75 × 50 millimeters
5. Micro adjustment focusing 8. Lighting bulb: 6V 12W tungsten bromide lamp
Adjustment range: 7mm 9. Instrument weight: 5kg
Scale value: 0.002 millimeters 10. Packaging box volume: 360 × 246 × 350 millimeters
3、 The completeness of the instrument set
1. Microscope body 1. Eyepiece 10 x, 12.5 x 1 each
2. One stage compression spring 8. One objective lens of 10 x, 40 x, and 100 x each
3. One piece of carrier film with a diameter of 10 and 20 respectively. 9. One monocular tube
4. Color filter (1 yellow, 1 green, each with a size of 10.10 x 1 micrometer eyepiece)
Grey and frosted glass) 11. Micrometer (grid value 0.01 mm) 1 piece
5. 1 bottle of cedar oil 12. Optional items:
6. Two light bulbs (bromine tungsten lamps) (spare) and one set of photography equipment
This instrument is an inverted metallographic microscope. As the observed surface of the sample coincides with the surface of the worktable, it is independent of the height of the sample, making it easy to use. The instrument has a compact structure, a beautiful and generous appearance, a large support area for the instrument base, and a sturdy bent arm, which makes the center of gravity of the instrument low and stable. Due to the 45 ° inclination between the eyepiece and the support surface, the observation is comfortable.