Description
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Ray Box
Description
A ray box consisting of a rugged sheet metal box with a 12 V, 10 W festoon type axially straight filament lamp.
Fitted with a cartridge for holding 4 types of slits – single, double, triple and wide slots Ideal for quick adjustment to get the desired ray/beam type Includes colour filters Also included is a convex cylindrical collimating lens for adjusting the beam to obtain long clear tracks which can be parallel, converging or diverging.
Related products
Cylinderical Lenses
Description
Cylindrical lenses made of highly polished glass, magnifies in only one dimension. These lenses are used in transforming a point image to a line or changing the height of an image without changing its width.
| Size | Focal length | Add To Enquiry |
|---|---|---|
| Double-Convex | 50 x 50 mm | 75 mm |
| Double-Convex | 50 x 50 mm | 150 mm |
| Double-Convex | 50 x 50 mm | 200 mm |
| Double-Convex | 50 x 45 mm | 75 mm |
| Double-Convex | 50 x 45 mm | 150 mm |
| Double-Convex | 50 x 45 mm | 200 mm |
| Double-Concave | 50 x 50 mm | 75 mm |
| Double-Concave | 50 x 50 mm | 150 mm |
| Double-Concave | 50 x 50 mm | 200 mm |
| Double-Concave | 50 x 45 mm | 75 mm |
| Double-Concave | 50 x 45 mm | 150 mm |
| Double-Concave | 50 x 45 mm | 200 mm |
| Plano-Convex | 50 x 50 mm | 60 mm |
| Plano-Convex | 50 x 50 mm | 75 mm |
| Plano-Convex | 50 x 50 mm | 100 mm |
| Plano-Convex | 50 x 50 mm | 150 mm |
| Plano-Convex | 50 x 45 mm | 60 mm |
| Plano-Convex | 50 x 45 mm | 75 mm |
| Plano-Convex | 50 x 45 mm | 100 mm |
| Plano-Convex | 50 x 45 mm | 150 mm |
| Plano-Concave | 50 x 50 mm | 60 mm |
| Plano-Concave | 50 x 50 mm | 50 mm |
| Plano-Concave | 50 x 50 mm | 300 mm |
| Plano-Concave | 50 x 45 mm | 60 mm |
| Plano-Concave | 50 x 45 mm | 50 mm |
| Plano-Concave | 50 x 45 mm | 300 mm |
Linen Tester
Description
These are collapsible pocket magnifiers. The optical system is a single element, glass Double Convex Lens. The housing is made of machined, black high grade plastic for a high finish look. These magnifiers fold flat to fit in your pocket. Scales are etched on the inner faces of the viewerÂ’s base.
Lens, Double Convex, Spherical
Description
Clear glass, ground edges
| Focal length | Power | Add To Enquiry |
|---|---|---|
| 25 mm | 100 mm | +10D |
| 25 mm | 150 mm | +6.6D |
| 38 mm | 50 mm | +20D |
| 38 mm | 100 mm | +10D |
| 38 mm | 150 mm | +6.6D |
| 38 mm | 200 mm | +5D |
| 38 mm | 250 mm | +4D |
| 38 mm | 300 mm | +3.3D |
| 38 mm | 500 mm | +2D |
| 38 mm | 1000 mm | +1D |
| 50 mm | 50 mm | +20D |
| 50 mm | 100 mm | +10D |
| 50 mm | 150 mm | +6.6D |
| 50 mm | 200 mm | +5D |
| 50 mm | 250 mm | +4D |
| 50 mm | 300 mm | +3.3D |
| 50 mm | 500 mm | +2D |
| 50 mm | 1000 mm | +1D |
| 60 mm | 100 mm | +10D |
| 60 mm | 200 mm | +5D |
| 60 mm | 300 mm | +3.3D |
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