ADVANCED SPECTROMETER 7”

The specification is similar to BESTO CAT NO 1588, spectrometer 7” is designed to meet the demands of a standard instrument for degree colleges and in technical labs .

Includes Special Circular Slit : The two jaws are operated by a knurled ring and moves symmetrically from the centre and remain parallel at all openings. Supplied in a superior quality wooden box. 

Collimator 

Inner tube Diameter : 28mm

Outer tube Diameter : 32mm

Diameter of Achromatic Objective : 25mm (1”)

F.L. of Achromatic Objective : 178mm(7”

Focus : By Smooth Rack & Pinion (Approx. 2” motion )

slit : Circular Slit

Telescope

Inner tube Diameter : 28mm

Outer tube Diameter : 32mm

Diameter of Achromatic Objective : 25mm

F.L.of Achromatic Objective : 178mm(7”)

Focus : By Smooth Rack & Pinion (Approx. 2” motion )

Ramsden Eyepiece : 15x

Crosswire : Fine Quality Crossline  Graticule

Scale & Verniers 

Circular Scale : 7” Dia. (178mm) S.S. Scale  Graduated from 0-360˚  (either in ½ ˚ or 1/3˚ Degree )

Vernier : 2 Precision engraved Verniers, one on each side of instruments For convenient Reading  Depending upon L.C.)

Least Count  : One Minutes or 30 Seconds or 20 Seconds