Putter head 2 having a head main body 4 constructed with a metal, and a member having low specific gravity 6 constructed with a material having a specific gravity lower than that of the metal constructing the head main body 4. The faucet assembly is rotatable between an upright position wherein the faucet assembly protrudes out from the basin and a folded position wherein the faucet assembly is received within the basin. The various aspects of the invention improve and optimize space utilization in the conduct of a surgical procedure, especially in the telesurgical systems which provide for concurrent operation by two surgeons using multiple robotic arm assemblies. When ischemia is found to be present in a tissue, a user can effect an optimal delivery of preservation fluids to the site of interest andor effect a change in the conduct of the procedure to raise the pH of the site. Further, in a foldable type terminal with a magnetic sensor, a picture with desired scale factor can be displayed by adjusting an angle between a first housing and a second housing. The use of micro ferrule clusters, as opposed to conventional connectors such as nuts andor bolts, permits the capillary ends to be positioned in extremely close proximity to the valve rotor and to each other, thus minimizing the volume between two capillaries when they are in brought into fluid communication with each other.