The mark consists of the letter "u" separated from the word "tap" by a circle midway up the letters. The cross on the "t" forms the top of the letter "a" and the tail on the letter "t" is connected to the bottom of the letter "a". A stylized machine arm connects the "ta" with the "p" in tap. The machine arm begins at a circle where the "t" is crossed, with a line extending at a 45 degree angle to another circle representing a joint in the arm, with a line extending down from that circle at a 45 degree angle to a third circle. An attachment on the arm extends into the "p", with the threading on the attachment outlined against the inside of the "p." A wire connects the attachment to the arm. The downward stroke in the "p" mimics the threading on the attachment.