What are these Marks for on this 1-metre folding rule?

[Leenhoser]

I have a 1-metre folding rule and I noticed that it has a small black rectangle marking at 18.5 cm, 27.5 cm, ... to 81.5 cm as shown in the attached photo. By extrapolation it seems that the marks start at 0.5 cm and then increase in increments of 9 cm.

Can anybody shed some light on what the markings are for? It must be important enough to go to the length of making the extra marks.
I'm familiar with the 16" and 19.2" marks for timber spacing in the SAE/imperial rule, but this one baffles me.

I'm assuming it is some sort of metric construction aid. 

 

[squall_line]

Funny thing is, Wiha doesn't seem to sell that model any longer; you can only really find it on a marketing website to order in quantities of 100 with your company's name and phone number on it.

I'm definitely curious to learn the answer, because I just spent a somewhat silly amount of time trying to research it myself just now.

 

[luvmytoolz]

Given you can fold these rulers back onto themselves to create angles/triangles, are they possibly a marker representing angle pitch sizes depending how they're folded?

 

[PaulMarcel]

Given you can fold these rulers back onto themselves to create angles/triangles, are they possibly a marker representing angle pitch sizes depending how they're folded?

I like this answer... it would be like adding Speed-Square functionality as an apparent Easter egg

 

[Tom the Remodeler]

Folding rulers are often marked for specific trades (framing, cabinetry, masonry, etc....). I wouldn't be surprised if this is a ruler marked for a stone mason/brick layer, and those little squares represent brick course markings, but that's just a guess......

 

[grobkuschelig]

Hello, your ruler is most likely made by „Kunststoffwerk AG Buchs“ in Switzerland. www.kwbswiss.ch

As far as I know these additional markings are only for production purposes. They allow for optical processing of length/dimensions by the machines.

Sent from my iPhone using Tapatalk Pro

 

[mino]

not sure, never used this, but if one notices:

"18.5" => 30 mm from the "far" edge, also it is 9.5 (we can round to 10) mm from the edge of the other leg when set in square position (vis-a-vis the leg one is reading the mark from)
"27.5" => 40 mm from the "far" edge, also it is ca 2 cm from the edge when set in "square" position, the scale is 2x at this point ...
"36.5" => 50 mm from the "far" edge, also it is ca 3 cm from the edge when set in "square" position
"45.5" => 60 mm from the "far" edge, also it is ca 4 cm from the edge when set in "square" position
"54.5" => 70 mm from the "far" edge, also it is ca 5 cm from the edge when set in "square" position
"63.5" => 80 mm from the "far" edge, also it is ca 6 cm from the edge when set in "square" position
"72.5" => 90 mm from the "far" edge, also it is ca 7 cm from the edge when set in "square" position
"81.5" => 100 mm from the "far" edge, also it is ca 8 cm from the edge when set in "square" position

There are is no "9.5" mark as it would make no sense (0 cm) nor a "90.5" mark as would not fit in

The most useful this would be in the 2-8 cm range where one may want to (quickly) see how things match up. For that it is enough to fold the rule where "5x marks are" and the mark will be 5 centimeters, etc. This can be pretty useful in masonry or carpentry when one needs a good-enough measurement but wants it fast and reliable.

Human brain does not work reliably with numbers, but it does with easily visible marks ...

Kinda like an instant speed-square just for referenced distance measurements.

 

[FestitaMakool]

If this being Wiha, who is targeted towards electricians, and judging with a bit of certainty it’s markings for electricians for finding where the trusses? are.

55,5mm is just about right distance in between two trusses? when using 2” (48mm) thick lumber.
Nowadays 2” (48mm) thick lumber isn’t necessary the default anymore.
As my own example below, using 1 1/2” (36mm) thick lumber the distance in between increases with about 10mm..:

Still standard spacing of the trusses? are CC = 600mm (60cm) or 23” and 5/8”

[attachimg=1]

[attachimg=2]

 

[peter halle]

Given you can fold these rulers back onto themselves to create angles/triangles, are they possibly a marker representing angle pitch sizes depending how they're folded?

I like this answer... it would be like adding Speed-Square functionality as an apparent Easter egg

[member=3513]PaulMarcel[/member] , check out this link for a ruler that does just that:

https://www.leevalley.com/en-us/shop/tools/hand-tools/marking-and-measuring/rules/72494-longlife-folding-rules?item=24N0653

Peter

 

[FestitaMakool]

Given you can fold these rulers back onto themselves to create angles/triangles, are they possibly a marker representing angle pitch sizes depending how they're folded?

I like this answer... it would be like adding Speed-Square functionality as an apparent Easter egg

[member=3513]PaulMarcel[/member] , check out this link for a ruler that does just that:

https://www.leevalley.com/en-us/shop/tools/hand-tools/marking-and-measuring/rules/72494-longlife-folding-rules?item=24N0653

Peter

I have one of the 2m version with built in angle finder and depth measurement.
Don’t expect pinpoint accuracy, but it’s very handy. It’s also one of the best to read with black markings on white.

 

[Leenhoser]

So I located the manufacturer online and sent them the query as well as to the store - Lee Valley, and the answer is well, not at all interesting. According to the manufacturer in Switzerland: These markings are for our automated production processes, so the machine detects if the segments are lined (up) correctly. However, the markings do not indicate any specific measurements. Lee Valley replied: the black markings on the LongLife Folding Rule (24N0650/24N0653) are indicators for their production team. The marks are there to make sure that the individual segments of the ruler overlap correctly. . Sorry that the answer couldn't be more interesting.

 

[luvmytoolz]

So I located the manufacturer online and sent them the query as well as to the store - Lee Valley, and the answer is well, not at all interesting. According to the manufacturer in Switzerland: These markings are for our automated production processes, so the machine detects if the segments are lined (up) correctly. However, the markings do not indicate any specific measurements. Lee Valley replied: the black markings on the LongLife Folding Rule (24N0650/24N0653) are indicators for their production team. The marks are there to make sure that the individual segments of the ruler overlap correctly. . Sorry that the answer couldn't be more interesting.

And just like that an opportunity to make up a really wild explanation is completely missed! ;-(

 

[FestitaMakool]

Hahaha! That’s no fun  [big grin]

(After my post I did some searching, and apparently Wiha has made one or more models of the folding ruler with markings for electricians.. but, as construction lumber evolve, dimensions doesn’t really hold up with one standard anymore, so a stud finder is probably more useful)

 

[semenza]

And the winner is ................ [member=63474]grobkuschelig[/member]  posted above ^^^  [thumbs up]

Seth

 

[grobkuschelig]

And the winner is ................ [member=63474]grobkuschelig[/member]  posted above ^^^  [thumbs up]

Seth

[emoji3060]
Expecting to receive immeasurable things from this! [emoji1787]

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