pencil tube

pencil tube

[′pen·səl ‚tüb]
(electronics)
A small tube designed especially for operation in the ultra-high-frequency band; used as an oscillator or radio-frequency amplifier.
References in periodicals archive ?
Do the same thing for the other fin unit, but tape it on the opposite side of the pencil tube.
9% sodium chloride irrigation solution (for this you need a prescription), a pencil tube of "After-Bite" sting relief, and cotton tipped applicators (or Q-Tips).
50 each, spiral-bound notepads and flat notebooks, from pounds 7, all Bureau; acrylic clips, 95p each, and pencil tube with crayons, pounds 11.