caption: The image shows a black and white photo of three metal objects on a white surface. The objects appear to be an electron microscope, with a cylindrical shape and a handle on the top. The microscope is composed of several components, including a lens, a probe, and a tube, all of which are connected to each other. The lens is positioned in the center of the microscope, while the probe and tube are placed on either side of it. The metal objects are arranged in a triangular formation, with the microscope on the left and the tube on the right.