serrated roller
11List of United States inventions — 1700s1731 Sextant * The sextant is an astronomical instrument that is used to determine latitude for navigation. It does this by measuring angular distances, like the altitude of the sun, moon and stars. The sextant was invented independently in… …
12Flight feather — Flight feathers are the long, stiff, asymmetrically shaped, but symmetrically paired feathers on the wings or tail of a bird; those on the wings are called remiges (singular remex) while those on the tail are called rectrices (singular rectrix).… …
13Adjustable spanner — From the bottom: 1. The first adjustable spanner f …
14Chainsaw — For other uses, see Chainsaw (disambiguation). An arborist using a chainsaw to fell a eucalyptus tree A chainsaw (or chain saw) is a portable mechanical saw, powered by electricity, compressed air, hydraulic power, or most common …
15Wrench — For other uses, see Wrench (disambiguation). A set of chrome vanadium metric wrenches, open at one end, box/ring at the other. This type is commonly known as a combination wrench. A wrench or spanner is a tool used to provide grip and mechanical… …
16Milling cutter — Milling cutters are cutting tools typically used in milling machines or machining centres (and occasionally in other machine tools). They remove material by their movement within the machine (e.g., a ball nose mill) or directly from the cutter s… …
17North Sea — For other uses, see North Sea (disambiguation). North Sea Location Atlantic Ocean Coordinates …
18Tody — Taxobox name = Todies fossil range = early Oligocene – Recent image caption = Jamaican Tody regnum = Animalia phylum = Chordata classis = Aves ordo = Coraciiformes familia = Todidae familia authority = Vigors, 1825 genus = Todus genus authority …
19Bicycle pedal — A bicycle pedal is the part of a bicycle that the rider pushes with their foot to propel the bicycle. It provides the connection between the cyclist s foot or shoe and the crank allowing the leg to turn the bottom bracket spindle and propel the… …
20Planet Hollywood Resort and Casino — Casino infobox logo=PlanetHollywoodLogo.svg casino=Planet Hollywood Casino theme=Hollywood, California address=3667 Las Vegas Blvd South Las Vegas, NV 89109 rooms=2,600 date opened=1963 (Tally Ho) / 1964 (King s Crown) / April 1, 1966 (Aladdin) / …
