...This mount is primarily intended to be used in the recessed position with 28mm or 35mm lenses used for enlarging subminiature formats such as Minox or 110 negatives...When used with 50mm to 90mm lenses in the extended position it can be used to increase reduction ratios, and may be required if focusing problems are encountered using the flat lensboard...

...Simply undo the two lamphouse securing screws, lift off the old lamphouse, and lower the new lamphouse into position...

...Spring clips hold the slide securely in position, centered in the image opening...

...Spring loaded adjusters automatically secure blades in position, and rubber feet keep the easel in place and protect the baseboard...