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2. Miter saw - Wikipedia

   en.wikipedia.org/wiki/Miter_saw

   A motorized miter saw. A miter saw or mitre saw is a saw used to make accurate crosscuts and miters in a workpiece by positioning a mounted blade onto a board. A miter saw in its earliest form was composed of a back saw in a miter box, but in modern implementation consists of a powered circular saw that can be positioned at a variety of angles and lowered onto a board positioned against a ...

3. Circular saw - Wikipedia

   en.wikipedia.org/wiki/Circular_saw

   A circular saw or a buzz saw, is a power- saw using a toothed or abrasive disc or blade to cut different materials using a rotary motion spinning around an arbor. A hole saw and ring saw also use a rotary motion but are different from a circular saw. Circular saws may also be loosely used for the blade itself.

4. List of instruments used in ophthalmology - Wikipedia

   en.wikipedia.org/wiki/List_of_instruments_used...

   Contact lenses. to correct refractive errors of the eye; a little invasive. Phoropter. used in refraction testing. Tonometers. used to determine the intraoccular pressure (IOP) - useful in glaucoma; video link for various types of tonometers. Speculum: to keep the eyes open during any operation. Universal eye speculum.

5. Radial arm saw - Wikipedia

   en.wikipedia.org/wiki/Radial_arm_saw

   A radial arm saw is a cutting machine consisting of a circular saw mounted on a sliding horizontal arm. Invented by Raymond DeWalt in 1922, the radial arm saw was the primary tool used for cutting long pieces of stock to length until the introduction of the power miter saw in the 1970s. In addition to making length cuts, a radial arm saw may be ...

6. Saw - Wikipedia

   en.wikipedia.org/wiki/Saw

   Circular saw: a saw with a circular blade which spins. Circular saws can be large for use in a mill or hand held up to 24" blades and different designs cut almost any kind of material including wood, stone, brick, plastic, etc. Table saw: a saw with a circular blade rising through a slot in a table. If it has a direct-drive blade small enough ...

7. Tabitha Babbitt - Wikipedia

   en.wikipedia.org/wiki/Tabitha_Babbitt

   Seth Babbitt (father) Elizabeth Babbitt (mother) Sarah "Tabitha" Babbitt (December 9, 1779 - 10 December 1853) was a Shaker credited as a tool maker and inventor. Inventions attributed to her by the Shakers include the circular saw, the spinning wheel head, and false teeth. She became a member of the Harvard Shaker community in 1793.