filler tube
21Fountain pen — A fountain pen is a nib pen that, unlike its predecessor the dip pen, contains an internal reservoir of water based liquid ink. From the reservoir, the ink is drawn through a feed to the nib and then to the paper via a combination of gravity and… …
22United States hand grenades — The military of the United States has used dozens of different types of hand grenades since its foundation. Presented on this page is a basic overview.High Explosive; Fragmentation and BlastMk II and Mk IIA1More commonly known as the Pineapple… …
23Lugged steel frame construction — is a method of building bicycle frames using steel tubing and sockets called lugs. For most of the history of the bicycle, steel has been the material of choice for high quality bicycle frames (though its dominance has waned in the last two… …
24Orbital welding — is a specialised area of welding whereby the arc is rotated mechanically through 360° (180 degrees in double up welding) around a static workpiece, an object such as a pipe, in a continuous process. Contents 1 History 2 Equipment 3 Application …
25Noble gas — Group 18 Period 1 2 He 2 …
26Brazing — This article is about the metal joining process. For the cooking technique, see braising. Brazing practice Brazing is a metal joining process whereby a filler metal is heated above and distributed between two or more close fitting parts by… …
27Gasket — [ thumb|sright|250px|Some seals and gaskets 1. o ring 2. fiber washer 3. paper gaskets 4. cylinder head gasket] A gasket is a mechanical seal that fills the space between two objects, generally to prevent leakage between the two objects while… …
28Earthbag construction — is a very inexpensive method of construction that is very strong and can be built very quickly. It is a natural building technique that has evolved from historic military bunker construction techniques, and temporary flood control dike building… …
29Rhinoplasty — For the album by Primus, see Rhinoplasty (album). Rhinoplasty Intervention Rhinoplasty: The lower lateral cartilage (greater alar cartilage) exposed for plastic modification via the left nostril …
30Ceiling balloon — A ceiling balloon is used by meteorologists to determine the height of the base of clouds above ground level during daylight hours.The principle behind the ceiling balloon is a balloon with a known ascent rate (how fast it climbs) and determining …
