Unitized probe tip assemblies of reduced size for a micro-browser use surface mount components in an isolation/coupling network that may include a parallel RC combination in series with a damping resistor. These surface mount components are soldered directly to one another without the use of a substrate. A pointed contact tip is soldered directly to one end of the surface mount components, and at the other end of those components is soldered the center conductor of a coaxial transmission line leading to a replication amplifier. A portion of the isolation/coupling network is enclosed within a supporting conductive shield that is also soldered to the outer conductive shield of the coaxial cable, which may be a semi-rigid micro coax (which might also be of a memory metal, such as Nitinol) that transitions into a flexible coaxial cable after leaving a slot in a sleeve that carries stationary and rotating rods (which might also be of a memory metal) to which the unitized probe tip assemblies are attached. In an alternate embodiment the isolation/coupling network may be a shaft of resistive diamond having a sharp tip at one end where it has a low bulk resistance the functions as a series damping resistance, which shaft also has toward the other end a much higher bulk resistance that functions as an isolation resistance that is also shunted by a coupling capacitance formed of a conductive pattern printed on the outside of the region of higher bulk resistance.