Description
Error: Contact form not found.
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
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 viewers base.
Reviews
There are no reviews yet.