Consists of a primary coil of insulated copper wire wound upon a cylinder with terminals, a secondary coil wound upon a cylinder into which the primary coil fits. Complete with terminals. A soft iron core fits the cylinder of the primary.

Technical specification:-
Eyepiece: Wide field WF10X
Objective:-
Infinity plan achromatic Objectives PL 4X/0.10
Infinity plan achromatic Objectives PL 10X/0.25
Infinity plan achromatic Objectives PL 40X/0.65(Spring)
Infinity plan achromatic Objectives PL 100X/1.25(Spring, oil)
Eyepiece tube: Trinocular eyepiece tube with 4 numbers antifungal eye piece with interpupillary adjustment and magnification of 10X / FOV 20 and 22mm or higher. Light distribution 2 way (100/0 and 0/100). Stage Super hard ceramic coated mechanical X/Y stage, rust free, scratch proof, with vernier calibration, should hold two slides firmly.
Condenser: High quality condenser (10X-100X objective magnification), Upright, universal turret type for bright field and fluorescence imaging.
Light source: LED 4W, Uniform light distribution, Intensity controller, having life span of more than 40,000 hrs.
Fluorescent illumination: 100W mercury fluorescent illumination and should have intensity controller, three or more filters (UV, Blue and Green excitation) and four position rotating filter turret.
Objectives and Objective Turret: Four or more position nose piece and facing inward.
Harmonic corrected antifungal PLAN objectives for fluorescent and bright field microscopy; 10X, 40X and 100X objectives.
Power supply: 12V DC, 1.5A (for mains 100-240V AC, 47-63 Hz,) with voltage stabilizer.

With screen diameter: 195m, 
Graduated: 360o, 
Rotateable screen 
Solid state intensity control system, mechanical stage
Objectives: 5x, 10x, 20x, 40x, or 60x magnification 125x to 1000x complete in cardboard box.

Description:-
Moveable surface coated mirror.
Fixed surface coated mirror loaded with springs.
Compensator.
Beam Splitter.
Universal adjustable Telescope with cross line graticule.
Diffused Glass screen with pin-hole holder.
Main knobs for moving mirror no.1, lease count 0.01mm.
Slow motion drum for moving mirror no.2, least count 0.0001mm.
Screw with nut & spring to adjust the view of pin hole in horizontal position.
Screw with nut & spring to adjust the view of pin hole in vertical position.
Base on stand for Interferometer.
3 knurled heads for adjusting the mirror no.2 parallel to no.1.
Well grounded Lead Screw with pitch 1 mm.
Pin hole disc.
Condenser unit (adjustable).
Eyepiece (adjustable).
Spring knob for adjusting the lead screw.
Viewing window to read main scale.
Telescope holding clamp (universal type).

Specifications:-
Base: Heavy stable base having a pillar on which mounted a platformcollimator/telescope prism housing.
Prism table: Carrying prism pillion and broca type refractive indes 1. 65/1. 74 housed properly with a cover rotatable by wavelength drum, outside.
Telescope: Fitted on the platform, focussed by rack/pinion, achromatic objective with light resolution, eyepiece with a scale last count 0. 01 cms.
Collimator: With achromatic objective having high resolution operateable by rack & pinion, having slit variable opening by micrometer screw.

Prism:
Glass prism e. D. F.
Glass prism d. E. D. F.
Extension mount for keeping l. G. Plate/edser butler
Plate/ fabry perot etalon.

Extra attachments for telescope:-
a) Attachment for converting c. D. S. Into monochromator.
b) Micrometer eyepiece – filer type reading 0. 001 cms.
c) Camera for above with plate holder.
d) Plate holder for camera.

General accessories for the instruments:-
a) Standard accessory bar- nearly 3 feet long.
b) Fabry perot etalon-aperture 30mm etalon with separation 3mm, 5mm, 10mm as desired by customer.
c) Edser butler plate for determining wavelength.
d) l. G. Plate
e) Stand for l. G. Plate
f) Condenser on stand.

Technical specification:-
Observation head : Side & top with eyepiece tube Binocular observation head inclined at 30º,  interpupillary distances adjustment range from 55 to 75mm.
Main body: All parts die cast to provide long life & good mechanical strength. Co-axial focusing control knobs, tension adjustment ring & pre focusing lock.
Eyepiece: 10x (16mm).
Objectives: PL10x, PL25x, PL40x, PL60x (optional).
Nosepiece: Quadruple nosepiece revolves on ball bearing.
Mechanical stage: Co-axial mechanical stage size 150x200mm cross travel range 15x15mm.
Illumination: Koehler illumination system, 6V20W halogen lamp with adjustable brightness.

Specifications:
A latest set of turret phase contrast equipment supplied with four plasn phase. 
Objective plph-10x, plph-20x/25x, plph-40x and plph-100x. 
The precision turret condenser unit has matching optical annulars for all the above magnifications of plan phase objectives.
In addition the turret has a neutral "zero position" for using the microscope as a normal bright field microscope.
Supplied complete with a centering telescope and green filter.

Technical Description:-    
Microscope frame for transmission and reflection mode polarization microscopy with built-in filter holders .
Plan achromatic, polarizing objectives with magnifications:-
4X POL N.A. 0.13 W.D. 17. 0 mm
10X POL N.A. 0.3 W.D. 10.0 mm
20X POL N.A. 0.5 W.D. 2.1 mm
40X POL N.A. 0.75 W.D. 1.1 mm

Wide field 10X eyepiece (02 numbers), with double cross line focusable .
Minimum 22 mm
Fixed Trinocular Tube.
High Power LED Light with power supply .
High Power LED light with power supply Built in Transmitted light filters.
Minimum 4 position centrable & detachable nosepiece .
Stroke: Min 22mm. Fine Stroke: Min 100µm Minimum  
Strain-free Polarizing condenser (Swing out type) .
Circular Rotatable and centerable 360° graduated mechanical stage,Polarizer slider for reflected illumination tube .
CCD Sensor Size : 2/3 inch
Resolution: 1920x 1080 pixels
Pixel Size: 3.45 X 3.45µm
Minimum 5 M Pixel Colored CCD Camera to be mounted on Trinocular tube with a suitable mounting adapter.
360? Rotatable with scale interval of 5? Wedge shaped, Measurement range 0 – 4λ.