|Scale divisions||0.5 Degree|
|Angular scale||0 to 360 Degree|
|Transmission Grating||300 lines/mm|
|Base length||40 mm|
|Dimensions||54.6 x 47.0 x 29.2 cm|
|Weight: approx||12 kg|
|Prism Flint Glass||60 Degree|
Spectrometer with rotatable prism or grating and directionally-adjustable objective tube for observing and measuring emission and absorption spectra. Can also be used for precise determination of the optical parameters of prisms or gratings. Includes prism with holder and transmission grating with holder. Objective tube has adjustable slit width and object distance of f = 175 mm, 32 mm diam. Eyepiece tube has continuous focusing and viewing angle adjustable eyepiece with cross-wire of f = 175 mm, 32 mm diam.
Spectrometers: Three models with following features in common. Differences noted against each model.
Base: Heavy cast-iron base, oven-baked paint. The heaviness of the base provides stability to the instrument.
The main scale (diameter 150mm) is divided 0 to 360° ´ ½° and fixed to a table that also holds the telescope. There are two verniers reading upto 1 minute of arc, located 180° apart at opposite sides of the main scale. Both verniers are visible through two protective acrylic windows. Release of a clamping screw allows independent rotation through fine adjustment screws for the telescope and vernier scale.
Mounted on a movable pillar, the telescope has a fine adjustment screw, locking screw and axis adjustment. Achromatic objective of focal length 178mm. Ramsden eye-piece 15X with cross-line graticule. With rack & pinion focusing.
Collimator: Has achromatic objective of focal length 178mm. Rack & pinion focusing. Adjustable slit, length 6mm, is made of stainless steel.
Prism Table: Marked with grooved lines to assist positioning of prism in relation to leveling screws. Has interchangeable clamping units for prism and diffraction grating.
Spectrometers supplied with prism clamp, grating holder, magnifier lens and tommy bar.
4873 A – Spectrometer, Standard:
4873 B – Spectrometer, Improved (26mm Aperture):
Our most popular spectrometer.
4873 C – Spectrometer, Improved (30mm Aperture): As 4873 B, but with achromatic objectives of diameter 32mm and aperture 30mm.
|Light box||17.5 x 10.0 x 6.5 cm approx.|
|Lamp||12 V, 36 W|
|Dimensions||32.0 x 32.0 x 14.2 cm|
|Storage case||25 x 24 x 10 cm approx|
|Length of inclined plane||600 mm|
|Dimensions||68.6 x 17.8 x 7.6 cm|
|Length of base||450 mm|
|Wooden Base||20'15cm fitted with one socket, a capstan & an eye-hook|
|Collars With Hook||6|
|Pulleys||8 single, 2 double sheave|