The Sector - forgotten tool

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Project by DonH posted 05-13-2011 03:02 PM 8916 views 25 times favorited 18 comments Add to Favorites Watch

The sector is a measuring device that solves woodworking math problems accurately and repeatably. How it is used is described best in the latest (June 2011) Popular Woodworking magazine. They also have an on line video demonstrating its use, very informative, makes one wonder why the tool fell into disuse as it certainly will be useful in any woodworking shop.

I wont describe how it is used here as PW does such a good job of it. I just wanted to draw the thing to your attention.

I made two sizes for convenience, one for cabinets and one for drawers and smaller items. The sector is used with a set of dividers and you will need a large pair when dealing with cabinet sized math problems. My smaller dividers are in the picture.

This is an easy and rewarding project that will no doubt get untold use.

Have fun


-- DonH Orleans Ontario

18 comments so far

View Bertha's profile


13567 posts in 3252 days

#1 posted 05-13-2011 03:04 PM

I need to educate myself now. Thank you for sharing this!

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View christopheralan's profile


1126 posts in 4279 days

#2 posted 05-13-2011 03:07 PM

I am gonna have to look into that. I love using some of the forgotten tools of the past, and it is nice not having to be tied to batteries or a cord. Thanks for posting!

-- christopheralan

View Lee A. Jesberger's profile

Lee A. Jesberger

6866 posts in 4538 days

#3 posted 05-13-2011 03:08 PM

Hi Don,

Nice job on this. They should prove very useful.


-- by Lee A. Jesberger

View MShort's profile


1798 posts in 3977 days

#4 posted 05-13-2011 03:25 PM

Thanks for sharing this with us. I checked out the video and now I am even more intrigued by this tool. Thanks.

-- Mike, Missouri --- “A positive life can not happen with a negative mind.” ---

View DonH's profile


495 posts in 3376 days

#5 posted 05-13-2011 04:51 PM

Thanks all, and you are welcome. Once you see the video there will be no going back – this will probably become an essential tool.


-- DonH Orleans Ontario

View SgtSnafu's profile


960 posts in 3830 days

#6 posted 05-13-2011 05:34 PM

I seen that article too, and seems like it would indeed be a useful tool – Yours turned out very well.

Thanks for sharing..

-- Scotty - aka... SgtSnafu - Randleman NC

View gul's profile


400 posts in 3521 days

#7 posted 05-13-2011 06:14 PM

Thanks for the post.Got to see the video now.

View ianlee74's profile


153 posts in 3507 days

#8 posted 05-13-2011 06:42 PM

Wow… Genious little device. Gotta make one now. Here’s the video he mentions…

-- Ian, Tennessee

View Ken90712's profile


17786 posts in 3747 days

#9 posted 05-13-2011 07:21 PM

Don hows it going? Hope all is well. You have peaked my interest for sure. I’ll be watching the video soon. Have a great weekend buddy.

-- Ken, "Everyday above ground is a good day!"

View DonH's profile


495 posts in 3376 days

#10 posted 05-13-2011 07:30 PM

Thank you Scotty, Gul, Ian and Ken – hope you find this as interesting as I did.

Ken – thank you and have a good weekend as well. Supposed to be warm here finally.


-- DonH Orleans Ontario

View Dennisgrosen's profile


10880 posts in 3674 days

#11 posted 05-13-2011 08:36 PM

thank´s for sharing this with us ,they look great :-)

one little tiny thing though but importen enoff for the rest of us
for later use and surch wuold you please tag the post with tool and compass
and of course Sector ... please :-)

take care

View DonH's profile


495 posts in 3376 days

#12 posted 05-13-2011 08:42 PM

Hi Dennis

Sorry – It never occurred to me to make my posts search-able. I will endeavour to improve in the future.

Thanks again


-- DonH Orleans Ontario

View Dennisgrosen's profile


10880 posts in 3674 days

#13 posted 05-13-2011 08:46 PM

you are welcome :-)

I did it too with my first tiny project untill there was a freindly L J that send me a little Pm :-)

take care

View swirt's profile


4380 posts in 3531 days

#14 posted 05-14-2011 04:37 AM

Nicely done Don. I read the article as soon as it arrived. I was pretty amazed that such a useful tool is not found more often.

I’m intrigued by the extra wings on yours at the hinged end. Just for looks, or some useful purpose?

-- Galootish log blog,

View Smitty_Cabinetshop's profile


16254 posts in 3177 days

#15 posted 05-14-2011 05:23 AM

Gotta get me one of these…

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive --

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