An aqueous semi-continuous emulsion polymerization process for producing bimodal polymer particles in volumes large than a single batch size is provided. The pointer transmits two codes such that a pressure applied to a pen tip is associated with a time difference between the two codes. Camera settings associated with the captured images are also stored. A transparent synthetic gel matrix permits observation of needle progression by both the trainee and the trainer and provides unique opportunities for coaching and intercession to prevent poor needle placement prior to its occurrence. Accordingly, power fed to the heater for heating to a prescribed temperature can be reduced, and thus, a heater member for mounting an object of heating and a substrate processing apparatus using the heater member, that can heat the object with higher efficiency, can be obtained. In one embodiment, the port combiner, IO ports, and server are all comprised in a single blade module for plugging into a backplane of the chassis.