JavaScope is a web-based application designed to operate a Philips CM200 Transmission Electron Microscope (TEM) and to view digital images remotely. Remote control and observation of TEM images is potentially useful in at least three separate areas: Collaboration, Teaching, and Service. As a collaborative tool the JavaScope application allows consultation across the country or world in that a colleague is able to view and manipulate a specimen and provide real-time input on the quality of the data. As a teaching and demonstration tool it can provide a "bulletproof" interface to the instrument for na´ve users and spectators. As a service tool it can be used by expert technicians to illustrate and explore specific problems with an instrument. This allows for a straightforward determination of the nature of a problem which benefits both customer and service provider. In this paper we will describe the implementation of the JavaScope application and discuss some of the benefits and disadvantages of the system. Additional information, and the applet source code itself, is available online at http://www.itg.uiuc.edu/itg_software/javascope.