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Lewiston, ME
$12.94
Title
Brass Compass And Pencil
Artist
Bob Orsillo
Medium
Photograph - Original Fine Art Photography By Bob Orsillo
Description
Vintage brass compass with lead pencil drawing a circle on white paper. Abstract white on white background.
Original fine art photography by Bob Orsillo
Copyright (c)Bob Orsillo / orsillo.com - All Rights Reserved.
Buy art online. Buy photography online.
A compass or pair of compasses is a technical drawing instrument that can be used for inscribing circles or arcs. As dividers, they can also be used as a tool to measure distances, in particular on maps. Compasses can be used for mathematics, drafting, navigation, and other purposes.
Compasses are usually made of metal, and consist of two parts connected by a hinge which can be adjusted. Typically one part has a spike at its end, and the other part a pencil, or sometimes a pen. Circles can be made by fastening one leg of the compasses into the paper with the spike, putting the pencil on the paper, and moving the pencil around while keeping the hinge on the same angle. The radius of the circle can be adjusted by changing the angle of the hinge.
Distances can be measured on a map using compasses with two spikes, also called a dividing compass. The hinge is set in such a way that the distance between the spikes on the map represents a certain distance in reality, and by measuring how many times the compasses fit between two points on the map the distance between those points can be calculated.
Compass and straightedge construction is used to illustrate principles of plane geometry. Although a real pair of compasses is used to draft visible illustrations, the ideal compass used in proofs is an abstract creator of perfect circles. The most rigorous definition of this abstract tool is the "collapsing compass"; having drawn a circle from a given point with a given radius, it disappears; it cannot simply be moved to another point and used to draw another circle of equal radius (unlike a real pair of compasses). Euclid showed in his second proposition (Book I of the Elements) that such a collapsing compass could be used to transfer a distance, proving that a collapsing compass could do anything a real compass can do.
Uploaded
June 14th, 2010
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Viewed 8,168 Times - Last Visitor from Wilmington, DE on 04/26/2024 at 2:30 PM
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Lewiston, Maine - United States
Vintage brass compass with lead pencil drawing a circle on white paper. Abstract white on white background. Original fine art photography by Bob Orsillo Copyright (c)Bob Orsillo / http://orsillo.com - All Rights Reserved. Buy art online. Buy photography online.
Largo, FL - United States
Bob, fabulous. My husband's father was a Civil Engineer and we Inherited his compass which looks just like this. Amazing and congrats.
Glendale, CA - United States
Hello Bob! Ah, this brings up memories of math classes, plus its very practical use when I need a good circle. I certainly wish I had such a beautiful one! Congratulations on your sale. f/v Kirsten
Largo, FL - United States
Bob, I couldn't believe it when I saw you had sold this piece. I have an old compass exactly like this that was my father-in-laws. Congratulations on your sale. It shows there are other people out there who have memories of these compasses and your photography is fabulous.
Cape Town, We - South Africa
This is just Classic ! Too Cool for School :) Awesome Photography Bob ! Well Done ! :)
Shelton, WA - United States
Fabulous Bob! I just gave my son Jake several of these that were my grandfathers, not exactly like this one but really old ones too! Love it! f/v
Sydney, NS - Australia
Congrats on the sale........this is so great ! love the light patterns too..........f/v...........................V
Haskell, TX - United States
I love this Bob; and it brings to mind my favorite poem A Valediction Forbidding Mourning" by John Donne. If they be two, they are two so 25 As stiff twin compasses are two ; Thy soul, the fix'd foot, makes no show To move, but doth, if th' other do. And though it in the centre sit, Yet, when the other far doth roam, 30 It leans, and hearkens after it, And grows erect, as that comes home. Such wilt thou be to me, who must, Like th' other foot, obliquely run ; Thy firmness makes my circle just, 35 And makes me end where I begun.
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