A universal chassis which may be assembled with modular componentry allowing for a play pattern with the user in which modification of the overall construction of the vehicle is encouraged. Thereby, a charged particle beam emitter emitting charged particles along an optical axis is realized. The contents of sample tubes held by the sample carrier can be accessed by a robotic pipetting device. A display assembly is operatively associated with a control assembly wherein the collected medical data from any one of the plurality of patients may be selectively accessed, reviewed on the display assembly and be correlated with additional identification information corresponding to each of the plurality of patients from which the collected data originated. An attachment portion extends from the hinge and has at least one opening for receiving a rope or other cord therein. The single crystal CBN grinding particle is blended with a ratio of equal to or more than 50% to a total summed volume of the single and multi CBN grinding particles.