In the sync sound footage of 240x (1974) Fisher is seen making photocopies of a black pattern (the design of Maltese cross movement, a part which produces the intermittent motion of the pull-down in a film projector.) Fisher punches holes in the copies so that the images can be properly registered. He then shoots the 240 individual sheets on an Oxberry animation camera. The title refers to these sheets in two ways: “240x” may mean 240 times or (in animator’s shorthand) 240 frames. The film ends with a ten second coda, the 240 frames of animated footage that is the product of the work previously represented.
[Source: William E. Jones, "Morgan Fisher: An Impersonal Autobiography"]