Dot pitch relates directly to the image quality of a monitor. It's the measurement of the diagonal distance between two phosphors of the same color. For example, the diagonal distance from a red phosphor dot to the next red phosphor dot. Aperture grille tubes use stripe pitch or aperture grille pitch to measure the horizontal distance between its phosphor stripes. A general rule is the smaller the dot or stripe pitch, the better the display.
Images look finer and crisper when the dot pitch is smaller.
Edges and lines appear smooth and refined. If you're considering a high resolution display, a finer dot pitch is important so images will be crisp. A dot pitch of 0.25 - 0.27 is recommended. Controlling the image on your screen requires using the controls on the front of the monitor. Analog controls are the conventional rotating dials or knobs offered on most economy models.