Carton For Corfield Lumieter Enlarging Exposure Meter
Corfield lumieter enlarging exposure meter carton. K.G. Corfield LTd.
Comparison photometer for enlarger. Image reflected by a mirror onto small spot of greaseproof paper visible from the front. Surface of the paper lit by light from a 5w lamp modulated by rotating continuous wedge. Adjustable preset mask for lamp. CAlculator scale calibrated for paper speeds 2-500, exposure times, 1-240 seconds. K.G. Corfield LTd.
Corfield lumieter enlarging exposure meter carton. K.G. Corfield LTd.
Corfield lumieter enlarging exposure meter guarantee. K G Corfield Ltd.
Corfield lumieter enlarging exposure meter instructions. K.G. Corfield LTd.