Miniature Screw Base (E10) bulbs with the lamp base designation "E-10" (sometimes called Miniature Edison Screw (MES), "E" stands for "Edison" and "10" indicates the diameter in millimeters as measured across the peaks of the thread on the base, e.g., E-10 base bulbs have a diameter of 10 mm. E-10 base light bulbs have a single contact on the bottom and are often found in flashlights, indicators and toys. Miniature Screw Base (E10) bulbs come in a variety of sizes ranging from G3-1/2 to G6 (for Globes) and TL-3 to T4-1/2 (for Tubular). Other International designations for the E-10 base is IEC (International Electrotechnical Commission) # 7004-22 and DIN (German Institute for Standardization) # 49610.