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| Forum topic by Tony | posted 53 days ago | 322 views | 1 time favorited | 14 replies | ![]() |
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53 days ago |
Topic tags/keywords: question ruler rule Can any one help me – One of my students found a very old folding rule – Made in England. The scale on one side is the standard imperial 1” = 1”, but on the other side, the graduations are sill marked in inches, but 1” on the scale actually measures 1.75” Does anybody know why and what is the purpose of this 1:1.75 ratio. Thanks -- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (http://www.poydatjatuolit.fi) |
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53 days ago |
Tony, it is very close to the ””Golden Ratio””:http://mathforum.org/dr.math/faq/faq.golden.ratio.html used for centruries to proportion furniture. Bob -- A mind, like a home, is furnished by its owner |
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53 days ago |
Perhaps it is a method of determining lumber thickness after it had dried and been surfaced. 1.75 ” green rough. 1” finished lumber. |
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53 days ago |
Tony I have a triangle ruler that gives me the same thing and many more, it is measurements in tens, if you look up triangle ruler you will find your answer. |
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53 days ago |
I use to use mine at work to scale down a plan in drafting |
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53 days ago |
I do not think it for measuring green wood – the quality of the rule is too high and delicate for that type of work. The rule is in 4 sections, with a total length of 24”, the width is about 1/2” and the thickness is about 1/8” It is made, I think by Archine werschock. Just checked the web, and these names actually might be a reference the type of measurement used, unfortunately a lot of the information is in German and Russian. “Werschock, russ. Längenmaß, = 1/16 Arschin = 1¾ Zoll = 0,044 m.” I think I might have just found the answer” ”Another fascinating line of Zig-Zag rules that Stanley manufactured were the Cyrillic rules in Werschock and Sajen, pre-Revolutionary Russian (1917) units of measurement. According to Webster’s Unabridged Dictionary, Sajen is a Russian measure of about seven English feet. For Sajcn units, an English rule 7 feet long was divided into 100 parts, making each part approximately 7/8 inch. A 7-foot rule in Werschock units was divided into 48 equal parts, which is about 1 ¾ inches per segment.” The material is Warrane (having knobs or protuberances; of a tree or piece of wood: having burls, knobs) box wood. So in summary, it looks like it nothing more than a conversion between a Russian and English measuring systems from the late 19th to early 20th century. -- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (http://www.poydatjatuolit.fi) |
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53 days ago |
I was going to say that! <vbg> Bob -- A mind, like a home, is furnished by its owner |
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52 days ago |
Boy and we all overlooked the obvious |
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52 days ago |
I’m too late… that’s what I was going to say but you found the answer first ! lol very interesting! -- "Functional WoodArt" by Debbie, Canada (http://www.execulink.com/~yohan) |
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52 days ago |
Unlike the others..I’d have never gotten that! -- Don, Pittsburgh |
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50 days ago |
It is funny after you find the answer everybody knew what it was, well I did not know I gave my idea of what I tough it was |
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50 days ago |
I have read about the zig zag ruler and it is old but if I compare to the (new version ruler) which is a triangular ruler it gives me the same answer it converts and used as a scale down ruler |
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50 days ago |
Gman this ain’t it. The one Tony has is for measuring Faberge Eggs ! Bob -- A mind, like a home, is furnished by its owner |
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50 days ago |
7 foot high eggs! :) -- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (http://www.poydatjatuolit.fi) |
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49 days ago |
I’d love to see some good photos of it if you can. It sounds really interesting. Send a message to me if you post them. -- Check out my new website! http://www.theeasellife.com |
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