RVFM Standard Spectrometer

An economical priced instrument, which is nevertheless capable of much useful quantitative work.

• Main structural parts are heavy castings with other metal parts being bright plated
• Scale: 170mm diameter, divided 0 to 360° x 1° independently rotatable with locking screw
• A spring loaded vernier scale attached to the telescope mount provides readings to 0.1° (6 minutes of arc)
  Collimator
• Mounted on fixed pillar with axis adjustment
• Objective lens has 150mm FL, an aperture of 21mm and is carried in spiral focusing system
• Unilaterally adjustable slit 6mm long
  Telescope
• Mounted on moveable pillar with adjustable, locking screw and axis adjustment
• Objective lens has 170mm FL 21mm aperture and is carried in spiral focusing system
• Ramsden eyepiece with cross wires and locking ring focus adjustment
  Prism Table
• Provided with three levelling screws and has lined marked to assist placement of prism
• Supplied with clamp for prisms up to 40mm high and diffraction grating holder with 25 x 25mm aperture