curve-cutting machine
101Spade — For other uses, see Spade (disambiguation). small spade for clay soil; the other one for sandy soil and loamy soil A spade is a tool designed primarily for the purpose of digging or removing earth.[1] Early spades were made of riven wood. After… …
102Hoe (tool) — For other uses, see Hoe (disambiguation). Azada redirects here. For video game by Big Fish Games, see Azada (video game). A person uses a hoe to cultivate vegetables. A hoe is an ancient and versatile agricultural tool used to move small amounts… …
103Blow torch — For other meanings, including oxy gas torches, see Blowtorch (disambiguation). An old fashioned kerosene blowtorch / blowlamp A blowtorch (US), blow torch (US), or blowlamp (UK) is a tool for applying lower intensity and more diffuse flame and… …
104Mitre box — A mitre box (US spelling, miter box ) is a woodworking tool used to guide a hand saw to make precise mitre cuts in a board. A home made manual miter sawing box. The most common form of a mitre box is a 3 sided box which is open at the top and the …
105List 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… …
106Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
107Strength of materials — Internal force lines are denser near the hole, a common stress concentration In materials science, the strength of a material is its ability to withstand an applied stress without failure. The applied stress may be tensile, compressive, or shear …
108Cultivator — F210 Honda tiller 1949 Farmall C with C 254 A two row cultivator …
109geometry — /jee om i tree/, n. 1. the branch of mathematics that deals with the deduction of the properties, measurement, and relationships of points, lines, angles, and figures in space from their defining conditions by means of certain assumed properties… …
110Operation Michael — Part of the Western Front of World War I …
