Digital theodolites consist of a telescope that is mounted on a base or tripod, as well as an electronic readout screen that is used to display horizontal and vertical angles. The telescope has a sight on the top of it that is used to align the target. The instrument has a focusing knob that is used to make the object clear. The telescope contains an eyepiece that the user looks through to find the target being sighted. Digital theodolites are convenient because the digital readouts take the place of traditional graduated circles and this creates more accurate readings on LCD screen.