 | 1826 - 460 sider
...from the middle to each end. Let a fulcrum of tempered steel, resembling the blade of a pen-knife, be made to pass through the middle of the beam a little above the centre of gravity. Similar steei blades are also made to pass through the ends of the beam for suspending the scales. The fulcrum... | |
 | Luke Herbert - 1827 - 524 sider
...from the middle to each end. Let a fulcrum of tempered steel, resembling the blade of a pen-knife, be made to pass through the middle of the beam, a little...also made to pass through the ends of the beam for suspending the scales. The fulcrum rests on two small portions of thermometer t »lies, fixed horizontally... | |
 | 1827 - 600 sider
...xwAe. V» pass t\\rou2;\v 1\ле толйЛХе <Л Л\» Veasa, a UttUs 143 NRW MANUFACTURE OF GLASS. Similar steel blades are also made to pass through the ends of the beam for suspending- the.?ca/es. The fulcrum rests on two small portions of thermometer tube, fixed horizontally... | |
 | Thomas Curtis (of Grove house sch, Islington) - 396 sider
...from the middle to each end. Let a fulcrum of tempered steel, resembling the blade of a pen-knife, be made to pass through the middle of the beam, a little...above the centre of gravity. Similar steel blades arealso made to pass through the ends of the beam for suspending the scales. The fulcrum rests on two... | |
 | Luke Hebert - 1835 - 816 sider
...from the middle to each end. Let a fulcrum of tempered steel, resembling the blade of a penknife, be made to pass through the middle of the beam a little...also made to pass through the ends of the beam for suspending the scales. The fulcrum rests on two small portions of thermometer tubes, fixed horizon-... | |
 | Luke Hebert - 1836 - 814 sider
...from the middle to each end. Let a fulcrum of tempered steel, resembling the blade of a penknife, be made to pass through the middle of the beam a little...also made to pass through the ends of the beam for suspending the scales. The fulcrum rests on two small portions of thermometer tubes, fixed horizontally... | |
 | Luke Hebert - 1849 - 850 sider
...from the middle to each end. Let a fulcrum of tempered steel, resembling the blade of a penknife, be made to pass through the middle of the beam a little...also made to pass through the ends of the beam for suspending the scales. The fulcrum rests on two small portions of thermometer tubes, fixed horizontally... | |
 | Luke Hebert - 1849 - 850 sider
...from the middle to each end. Let a fulcrum of tempered steel, resembling the blade of a penknife, be made to pass through the middle of the beam a little...also made to pass through the ends of the beam for suspending the scales. The fulcrum rests on two small portions of thermometer tubes, fixed horizontally... | |
 | David M. Knight - 1998 - 692 sider
...consists of a slender beam of wood, about 18 or 24 inches long, tapering a little from the middle to each end. A fulcrum of tempered steel, resembling the blade...also made to pass through the ends of the beam for suspending the scales. The fulcrum rests on two small portions of thermometer tube, fixed horizontally... | |
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end. A fulcrum of tempered steel, resembling the blade O f a penknife, is made to pass through the middle of the beam a little above the centre of gravity. Similar steel blades are also made to pass through the ends of the beam for 