Centering ruler

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SteveM
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Centering ruler

Post by SteveM » Mon Nov 09, 2015 11:36 am

Here's an interesting tool:

Image
http://www.stewmac.com/Luthier_Tools/To ... _Rule.html

How many times have you put your ruler on something and had to do the mental math to figure how much up and down to go to get equidistant points from the center?

The scale on the end is nice when you have to keep the ruler square to a surface, or you don't have the room to drop the ruler in from the top.

Steve

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mklotz
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Re: Centering ruler

Post by mklotz » Mon Nov 09, 2015 11:58 am

Or you could just make one of these...

http://www.homemadetools.net/forum/larg ... #post37084
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SteveM
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Re: Centering ruler

Post by SteveM » Mon Nov 09, 2015 1:24 pm

mklotz wrote:Or you could just make one of these...

http://www.homemadetools.net/forum/larg ... #post37084
Great. Now I have to add ANOTHER tool to my list of "I have to make one of those" :-)

That works when you have parallel sides, but not when the sides are not parallel, nor when you don't have access to the sides.

Steve

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mklotz
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Re: Centering ruler

Post by mklotz » Mon Nov 09, 2015 1:44 pm

SteveM wrote: Great. Now I have to add ANOTHER tool to my list of "I have to make one of those" :-)

That works when you have parallel sides, but not whe the sides are not parallel, nor when you don't have access to the sides.
But it's much more convenient than a ruler in those cases where it can be used.

If you have a pair of stair gages (who doesn't?)...

http://www.amazon.com/s/ref=nb_sb_noss_ ... tair+gages

you can mount them on your ruler at points equidistant from the center and quickly assemble something similar to what I made.
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SteveM
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Re: Centering ruler

Post by SteveM » Mon Nov 09, 2015 2:55 pm

mklotz wrote:If you have a pair of stair gages (who doesn't?)...
Me.

Steve

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mklotz
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Re: Centering ruler

Post by mklotz » Mon Nov 09, 2015 3:06 pm

SteveM wrote:
mklotz wrote:If you have a pair of stair gages (who doesn't?)...
Me.

Steve
It was said tongue-in-cheek. Most folks don't know what they are and even fewer have a set. It speaks to my tool obsession that I have two sets. :)
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SteveM
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Re: Centering ruler

Post by SteveM » Mon Nov 09, 2015 4:49 pm

A typical conversation when a friend needs something fixed goes like this:

"Do you have"
"Yes, I have two"

Steve

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Re: Centering ruler

Post by hammermill » Mon Nov 09, 2015 10:28 pm

who doesnt have a stair gauge, tramel points, or a 6 inch ruler the middle is three. if math is a challenge. or use a piece of note paper folded in half no numbers involved

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BadDog
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Re: Centering ruler

Post by BadDog » Tue Nov 10, 2015 1:07 am

Wow, and I thought it was just me...
Russ
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earlgo
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Re: Centering ruler

Post by earlgo » Tue Nov 10, 2015 11:25 am

We old school drafters used to split the distance between two lines by laying a scale at an angle with a whole number over each line. Then it was easy to mark of halves, thirds, quarters, etc.

Image

--earlgo
Before you do anything, you must do something else first. - Washington's principle.

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SteveM
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Re: Centering ruler

Post by SteveM » Tue Nov 10, 2015 1:34 pm

earlgo wrote:We old school drafters used to split the distance between two lines by laying a scale at an angle with a whole number over each line. Then it was easy to mark of halves, thirds, quarters, etc.
I remember where someone needed to divide a space into a set number of roughly equal points, and they took the waistband from underwear, marked off inches on it and stretched it out across the space.

Steve

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Re: Centering ruler

Post by earlgo » Tue Nov 10, 2015 6:15 pm

This Old House guys use the elastic tape to space railing bars.

--earlgo
Before you do anything, you must do something else first. - Washington's principle.

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