Description:
Polarizing microscope NP-400 can observe mineral crystal figure, color and interference color and also identify its optical performance. It is a good microscope used in geology, petroleum, coal, Chemical fiber, medical treatment and physic inspection. It is also widely used in academic demonstration and research.
Feature:

	0°-90° Rotatable Analyzer and when out of optical path, Single Polarizing Observation is Available. With Bertrand, Interferogram of Specimen can be observed clearly. λ Slip,1/4λ Slip and Quartz Wedge are Equipped
	Revolving round stage Φ 145mm, 360°rotatable and graduated in 1° increments, minimum resolution 6,when using vernier scale
	Polarizer can be Swung out of Optical Path.6V/20W Halogen Lamp Illumination, Brightness Adjustable

Specification:

Model	NP-400B
Viewing Head	Compensation free binocular head inclined at 30°, 360° rotatable
Eyepiece	Eyepiece WF10× /18with scale of crosshair
	Eyepiece WF10×/18
Objective	Strain free achromatic objective 4×,10×,40×,60×
Nosepiece	Backward quadruple nosepiece
Analyzer	Rotatable analyzer with gradation 0°-90°
Bertrand Lens	Bertrand lens, sliding in/out of optical path
Optical Compensator	λ Slip (first class red),1/4λ Slip quartz wedge
Condenser	Abbe condenser NA1.25 with iris diaphragm & filter
Focusing	Coaxial coarse & fine adjustment, range 28mm, fine division 0.002
Polarizer	Sliding in/out of optical path, located on the top of collector
Illumination	6V/ 20W Halogen lamp, brightness adjustable