The modifier OZ indicates that the surface profile tolerance zone is allowed to be offset from being symmetrical around the theoretically exact feature by a constant but unspecified amount. The width of the tolerance zone, T = 0.1 mm, is given in front of the OZ. The mod- ifier UF (...
The shell is spiral, symmetrical, and chambered, or divided into several cavities by simple curved partitions, which are traversed and connected together by a continuous and nearly central tube or siphuncle. See Tetrabranchiata. Nautilus (n.) The argonaut; -- also called paper nautilus. See ...
Also, the particulate material 20 may be symmetrical in shape, asymmetrical and may comprise a carbide such as silicon carbide; polymeric particles such as cashew particles, modacrylic, phenolic, epoxy; or minerals such as calcium carbonate, calcium metasilicate, flint, and basalt. In the ...
) An instrument invented by Sir David Brewster, which contains loose fragments of colored glass, etc., and reflecting surfaces so arranged that changes of position exhibit its contents in an endless variety of beautiful colors and symmetrical forms. It has been much employed in arts of design. ...