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Does anyone know of a manufacturer/seller of "sectors"?

Thanks in advance.

T.Z.

(09-12-2016, 08:23 AM)Tony Z Wrote: [ -> ]Does anyone know of a manufacturer/seller of "sectors"?

Thanks in advance.

T.Z.

As in a modern manufacturer?  No.  Seen plenty of pictures of vintage ones (ivory!!!) and shop made ones.

When I've decided it was the right tool for helping me divide things into odd quantities, I just used one of my 2-foot folding rules and a compass.  Worked well enough to get the compass set close on the first try and I could fine adjust as needed.

I don't know anyone who sells them.  If you want to make one, George Walker has a sketch, done by Jim Tolpin, I think, on his website, georgewalkerdesign.wordpress.com.  It's  posted under "Down the Rabbit Hole IV."

https://georgewalkerdesign.wordpress.com...t-hole-iv/

(09-12-2016, 08:23 AM)Tony Z Wrote: [ -> ]Does anyone know of a manufacturer/seller of "sectors"?

Thanks in advance.

T.Z.

Funny enough, I was reminded of this guy burn-heart.com who is the cat that is making cubic rulers and other obsolete unit of measurement stuff.  He might have them or do comissions.

This might be just the tool for the Crucible guys to make.

In the back of my mind, I seem to remember reading something by either Walker or Tolpin to the effect that they would make Sectors for sale, or maybe one of them had cardboard patterns for use in making your own.

(09-12-2016, 01:27 PM)Rob Young Wrote: [ -> ]Funny enough, I was reminded of this guy burn-heart.com who is the cat that is making cubic rulers and other obsolete unit of measurement stuff.  He might have them or do comissions.

That's Brendan Gaffney. He posted an image of a prototype he's working on:

https://www.instagram.com/p/BKQ5VmVAGJW/...nheartmade

I imagine it will be a while though.

BTW, real sectors don't look much like the thing Jim Tolpin made. The real ones are less than a foot long and have a zillion measurements engraved on them. See for example page 7 of this article:

http://citeseerx.ist.psu.edu/viewdoc/dow...1&type=pdf

Sectors come in many different sizes: There would be a size for drafting for 'paper' scale and there would be size for 'building' scale. You also need appropriately sized dividers for each size as well.

These are dead easy to make so I'm not surprised no one has taken up the mantle to manufacture them. Of course, you can make them as fancy as you want but functionally, two straight edge boards and a hinge are the materials you need to make it. I like Brendan's pin ... I did the same myself with a scrap coat hanger wire and a drilled hole.

My other advise is because the wood arms are thick relative to a brass one, if the graduations are indicated on the board edges, it helps increase precision when setting your divider.

Could this LV Marking Multi-Tool kinda sorta be used as a sector?

The Schwarz did a blog a while back and he took a somewhat used up but serviceable boxwood folding rule, sanded the numbers and lines off the added his oun scale for whatever he was doing. Someone should be able to find it, I'm not sure I'm registered for his blog.
Jim

(09-13-2016, 06:35 PM)Boatman53 Wrote: [ -> ]The Schwarz did a blog a while back and he took a somewhat used up but serviceable boxwood folding rule, sanded the numbers and lines off the added his oun scale for whatever he was doing. Someone should be able to find it, I'm not sure I'm registered for his blog.
Jim

http://www.popularwoodworking.com/articl...lding-rule