RAY TRACK APPARATUS

PRODUCT DESCRIPTION

SKU: GP0502

A compact visual teaching aid which is robust in construction wood board 400x280x13mm with matt white surface, mounted on rubber feet carries a circular scale with four quadrants 0-90° graduated every 2°, with two lines at right angles. The ray box provided with slots to accommodate metal slits, colour filters, lenses etc., and is fitted with a 12V 24W line filament.