Skin Blood Flow in Adult Human Thermoregulation

An interchangeable endless loop magnetic tape cartridge is provided with a first compartment for storing the bulk of the tape and a second compartment containing the driving means and magnetic head. The first compartment is provided with a curved inner surface to reduce the amount of tape rubbing against the walls of the first compartment. Access to the second compartment is provided by a finger which protrudes into the center of the second compartment which reduces the tendency of the tape to become electrostatically attracted to adjacent convolutions and to the walls and thus reduce tape tension between the driving means and tape head.