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How to find half of 11/16 the easy way.

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Forum topic by RussellAP posted 870 days ago 5791 views 0 times favorited 13 replies Add to Favorites Watch
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RussellAP

2950 posts in 918 days


870 days ago

How many times have you had to find the halfway point between some odd numbers?
Here is an easy way to measure the distance between those odd measurements.

Put your tape at one end of the board and simply angle the other end till you get to an easily divisible number. Then mark the half way point, or quarters, or whatever.

Here is an example of a board measuring 2 3/4. Some of you know what half of this is, but you don’t have to know, just slide the end of the tape till the other edge is on three inches.

Like this.

Then mark the 1 1/2 which is now halfway. This works on just about anything you want to divide in two, three, four…..

Olef pointed out that the tape I’m using wouldn’t give the ‘exact’ half way point, but if I didn’t have a camera in my hand I’d have started the tape on the one inch mark, or used a ruler which I usually do when I measure. I don’t like tape measures, the rivets can loosen up and make every measurement you use slightly off. I prefer a metal ruler.

-- A positive attitude will take you much further than positive thinking ever will.


13 replies so far

View oluf's profile

oluf

256 posts in 1671 days


#1 posted 870 days ago

The way you are holding the tape measure in the picture will not give you the half way poin./ The tab on the end of the tape measure is not as wide as the tape. Which side of the tape are you going to read the 1 1/2 inches on?

-- Nils, So. Central MI. Wood is honest.Take the effort to understand what it has to tell you before you try to change it.

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rhett

697 posts in 2299 days


#2 posted 870 days ago

Just double the denominator.

-- http://planeandsimpleblog.wordpress.com/

View rasp's profile

rasp

75 posts in 890 days


#3 posted 870 days ago

picked up this trick in college, from an elderly fellow that grew up in England, earned his apprenticeship building boats. so many tricks to learn.

View RussellAP's profile

RussellAP

2950 posts in 918 days


#4 posted 870 days ago

oluf, I was not in my shop when I did this. I rarely use tape measures, I prefer a ruler, so yes, it won’t be exactly half with this tape unless you hold the tape on the left side of the line. But you get the point. I would hold the tape at the one inch mark if I didn’t have a camera in one hand, lol.

-- A positive attitude will take you much further than positive thinking ever will.

View sandhill's profile

sandhill

2119 posts in 2556 days


#5 posted 870 days ago

Very slick, I will have to remember this. Thanks

-- Bob Egbert AKA Sandhill http://www.sandhillwoodworks.com/

View ducky911's profile

ducky911

209 posts in 1421 days


#6 posted 870 days ago

Thanks. Very good trick. Ijust learned that the other day. You can use it to find mult. Spacings also like 3 or four equal spaces..good for dovetail layout. Pretty cool trick.

When getting down in fractions i don’t like below 16th. I bought a digital thickness gage and it reads 11/64..?? Whats that?..is that alittle more than 2/16ths….to much info….we are dealing with wood here.

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TopamaxSurvivor

14724 posts in 2308 days


#7 posted 870 days ago

Roy and Norm had to demonstrate that about 15 times before I finally remembered it ;-))

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View wee3's profile

wee3

76 posts in 904 days


#8 posted 870 days ago

Yea,thats a good tip,use it alot with steel rule@tape.

-- BiLL @wee3

View Martyroc's profile

Martyroc

2708 posts in 938 days


#9 posted 869 days ago

Nice tip, thanks for the reminder I used that tip years ago and somehow forgot all about it.

-- Martin ....always count the number of fingers you have before, and after using the saw.

View TechRedneck's profile

TechRedneck

738 posts in 1489 days


#10 posted 869 days ago

I just keep a 12” metal center riule in my apron. Use it all the time

-- Mike.... West Virginia. "Man is a tool using animal. Without tools he is nothing, with tools he is all.". T Carlyle

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TechRedneck

738 posts in 1489 days


#11 posted 869 days ago

I just keep a 12” metal center ruler in my apron. Use it all the time

-- Mike.... West Virginia. "Man is a tool using animal. Without tools he is nothing, with tools he is all.". T Carlyle

View Richard's profile

Richard

865 posts in 1322 days


#12 posted 869 days ago

ducky911 , 11/64s is time to run it thru the planer one more time for just a skosh bit. and a skosh is a real Tech term. :) I would have to get out my calculator and mess with it for a while to come up with the right answer for that.

View helluvawreck's profile

helluvawreck

15623 posts in 1498 days


#13 posted 868 days ago

The tab on the end of the tape is not necessarily accurate anyways. Just use the 1 inch mark and the 4 inch mark and use the middle mark (2-1/2 in.). Better yet use a good 6 inch machinist ruler instead.

helluvawreck
https://woodworkingexpo.wordpress.com

-- If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away. Henry David Thoreau

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