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Folding Rule

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Forum topic by Tony posted 53 days ago 322 views 1 time favorited 14 replies Add to Favorites
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Tony

624 posts in 567 days


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)

View Bob #2's profile

Bob #2

2081 posts in 558 days


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.
1 :1.68.
I wonder if it was used to scale up cabinetmakers samples to working size?
Many cabinet makers built miniatures and carried them to towns to draw contracts for furnisihings durin the 1800’s.
I’m guessing. – I got nothun.

Bob

-- A mind, like a home, is furnished by its owner

View Jbower500's profile

Jbower500

3 posts in 94 days


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.

View GMman's profile

GMman

322 posts in 234 days


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.

View GMman's profile

GMman

322 posts in 234 days


53 days ago

I use to use mine at work to scale down a plan in drafting

View Tony's profile

Tony

624 posts in 567 days


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)

View Bob #2's profile

Bob #2

2081 posts in 558 days


53 days ago

I was going to say that! <vbg>

Bob

-- A mind, like a home, is furnished by its owner

View Jbower500's profile

Jbower500

3 posts in 94 days


52 days ago

Boy and we all overlooked the obvious

View MsDebbieP's profile

MsDebbieP

12282 posts in 697 days


52 days ago

I’m too late… that’s what I was going to say but you found the answer first ! lol
and of course Bob beat me to it as well ;)

very interesting!

-- "Functional WoodArt" by Debbie, Canada (http://www.execulink.com/~yohan)

View Don Newton's profile

Don Newton

158 posts in 155 days


52 days ago

Unlike the others..I’d have never gotten that!

-- Don, Pittsburgh

View GMman's profile

GMman

322 posts in 234 days


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

View GMman's profile

GMman

322 posts in 234 days


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

View Bob #2's profile

Bob #2

2081 posts in 558 days


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

View Tony's profile

Tony

624 posts in 567 days


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)

View Blake's profile

Blake

2241 posts in 411 days


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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