An aperture, typically rectangular in shape, whose length is large compared to its width. Apertures, generally small compared to the light source, may have fixed or adjustable shapes through which radiation enters or exits an instrument.
Usually narrow entry point for light to a spectrograph. The slit is often made from a pair of ordinary razor blades which can be machined to achieve very straight edges. This gives a precisely determined light source for the instrument.
A slitter will cut paper into narrow strips. Some paper folders have a slitting feature which basically looks like a pizza cutter and has the ability to cut paper in half. Stack Capacity - The stack capacity is the amount of paper that can be placed into a paper folder's paper tray.
To cut rolls of labelstock to specified widths. Either rotary (scissor action) or stationary (razor or air) knives or blades are used with mechanical unwinding and rewinding devices that are controlled to ensure that correct tracking and tension of the roll from the master reel to the converted widths takes place. Most Labelstock converters purchase their stock - pre-slit by the Labelstock Manufacturers.
elongate perforation (e.g. Emiliania). 5 TERMS FOR DESCRIBING COCCOLITH RIMS 5.1 Parts of rims (Fig. 5) Each of these parts may be formed of a single cycle of elements, part of a cycle or several cycles.