All manufacturers of microscopes design their microscopes to accept standard c-mount microscope cameras. These are the best and most convenient class of live image camera to use for microscopy. This class of camera is specially designed for microscopy with microscopy appropriate live camera controls and software. Technically speaking a c-mount has a screw thread with a diameter of 1 inch (25.4mm) and 32 TPI (threads per inch). The “flange focal distance” is 17.52mm (0.69 inches). The C-Mount standard also defines the thread length as being 3.8mm.