Abstract: A two part fastening assembly 30 for use with a common fastener 500 such as a screw, bolt, or the like includes a substantially ring-shaped base member 32 having a washer-shaped element 38 attached to one end. Washer-shaped element 38 has a hole 42 sized to accept the shank 504 of common fastener 500. Base member 32 has a plurality of circumferentially spaced apertures 48. A substantially bowl-shaped cap 34 has a corresponding plurality of legs 60 having barbs 62. The shank 504 of common fastener 500 is inserted into base member 32 and into hole 42 until head 502 abuts washer-shaped element 38. Cap 34 is then inserted into base member 32, covering head 502, and barbs 62 snap into apertures 48 and are captively engaged thereby.

Abstract: A dual function read data circuit for a mid-roll interrupt capable photographic camera reads magnetically recorded data from a magnetic layer on photographic film and outputs either a data present signal or an actual converted data signal in response to a mode select command signal.