Leitz incident-light interference device r instructions. Available to purchase for immediate download. Below is an extract from the manual converted to text for a quick impression on the content. Leitz incident-light interference device r instructionsIncident-light Interference Device RFig. 1 Incident-Light Interference Contrast Device R l Lamp Housing 50 2 Incident-light attachment 3 Polarizer 4 A -plate 5 Aperture diaphragm 6 Field diaphragm 7 Filter slide slot for analyser 8 Revolving nosepiece