An AlTiC-based substrate suitable for a thin-film magnetic head is provided. The web section includes elasticized weft yarns that facilitate an improved method of constructing the round sling. A second wire leads from the second wire-bonding pad to an electrode disposed adjacent to the light-emitting elements in the block, preferably leading to a point near the middle of this electrode. The measurement arm is slidably supported on the clamp. In the non-operative position, the strips are adjusted relative to the floor so that cargo in the carrier is at least partially supported by the floor. Some of the fluid from the tank is pumped by the centrifugal pump into the separator to cause the rotor to rotate at a speed sufficient to provide a rotational force of the fluid impinging on the casing of between about 1000 g and about 2000 g to thereby clean the fluid.