Newton Colour Disc (DI-1689)
Multi-coloured disc mounted on metal stand, rotated by a hand wheel.
Ray Box
Provide a simple means of producing single or multiple rays of light for use in elementary optics. Made of die-cast alloy, the ray box has an open front and vertical internal grooves to accommodate a slit plate and a cylindrical lens. Supplied complete with a metal plate having single and triple slits, a 12 V 24 W SBC line filament lamp and a lamp holder.
   

Spherometer

(DI-63/64/65/66/67)
Brass dial head 40 mm diam, divided and marked in 100 divisions, vertical scale 10-0-10 mm, fitted on tripod stand, distance between legs 40 mm.

   

Spectrometer Prism
Optically worked working sides, equilateral
Borosilicate crown glass, refractive index 1.510

Available in...  DENSE FLINT GLASS, EXTRA DENSE FLINT GLASS, DOUBLE EXTRA DENSE FLINT GLASS

  • DI-1770…25X25mm

  • DI-1771...32X32mm

  • DI-1772...38X38mm

   

Prism
Glass, equilateral, polished faces, edges slightly bevelled.

DI-1766….37MMx37MM
DI-1768….50MMx50MM

   

Reading Telescope (DI-1501)
Fitted with an achromatic objective of fl 175 mm. clear aperature of 23 mm and x8 Ramsden eye-piece with a cross- line graticule. The focusing is done by rack & pinion arrangement. Mounted on heavy metal stand.

 
   

Lens, Double CONVEX

(DI-1753/54/55/56)
Clear glass, ground edges

AVAILABLE IN FOLLWING SIZES

DIA 50MM, 60MM, 75MM, 100MM

   
Lens, Concave, Spherical
(DI-1753/54/55/56)
Clear glass, ground edges

AVAILABLE IN FOLLWING SIZES

DIA 50MM,  60MM, 75MM, 100MM

 
   
Magnifier, Reading Glass
(DI-1760)
In metal frame with black plastic handle

A.50MM
B.60MM
C.75MM
D.100MM
 
   
Block Acrylic, Semi-Circular
   

Spectrometer, Intermediate

(DI-1632/33/34/35)
Reads to 1 minute of arc.
150 mm diam. scale with protective cover and acrylic windows to read verniers, is fixed to the telescope movement. The table is attached to double ended verniers reading to 1 minute of arc with magnifiers provided for the purpose. Both telescope and table rotations have fine adjustments. Collimator is on a fixed pillar with 175 mm fl achromatic objective of 25 mm aperture and an adjustable slit. The telescope is on a movable pillar with 175 mm achromatic objective x8 Ramsden eye-piece and glass crossline graticule. Both telescope and collimator have rack and pinion focussing and their optical axes can also be adjusted. Prism table has lines to assist prism placement and has three levelling screws. With prism clamp, diffraction grating holder & one tommy bar for axis adjustment, in case.

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