It is commonly smoked in glass pipes made from glassblown Pyrex tubes and light bulbs. It used a large number of valves (vacuum tubes). A functionally complete logic system may be composed of relays, valves (vacuum tubes), or transistors. The instrument read punched paper tape that controlled an analog synthesizer containing 750 vacuum tubes. The multiplier used almost a quarter of the machine's 4,050 vacuum tubes (valves). It was a six-stage device built of vacuum tubes and thyratrons. MTA phones consisted of vacuum tubes and relays, and weighed . They have wide greenish floral tubes with funnel shaped bright yellow coronas. The first computer monitors used cathode ray tubes (CRTs). Lesley faced complications of blocked fallopian tubes. The ICP torch consists of 3 concentric quartz glass tubes. This usually takes place in the ampulla of one of the fallopian tubes. The fuselage had two cameras along with six ejector tubes for flashlight cartridges. Manufacturers use different numbering systems for black light tubes. She was fitted with four torpedo tubes containing torpedoes.