The leica film cassette model b directions for use . Available to purchase for immediate download. Below is an extract from the manual converted to text for a quick impression on the content. The leica film cassette model b directions for useThe standard LEICA film cassette holds about 5‘/4 feet (1.6 m) of 35 mm. film, sufficient to make 36 exposures 24x36 mm. in size. Shorter lengths may be inserted, if desired. the cassette consists of three parts: outer shell, inner shell, and centre spool. A locating groove on the inner shell and corresponding pin inside the rim of t outer shell control the movements ofthe tv components when opening or closing. Opening the Cassette: Flex the safety spring slightly with the left for o’ _4 With the right hand turn the inner shell, by th c as far as it will go in a clockwise direction and w c it completely (See illustrations on pages 3 and 4 9. Closing the Cassette: lnsert the inner shell into the outerin such a man a h the mouths coincide. The pin of the outer shell slides the locating groove of the inner shell until a stop reached. The cassette is locked by turning the inner sh in an anti-clockwise direction until' the safety Spri engages f)