How to Use a Sector

by Patrick Harper - Blood, Sweat, and Sawdust

The sector is an excellent tool for proportioning your furniture designs quickly and accurately.  Last week, I showed you how to make a sector from an old folding rule.  I also discussed how to use it.  Despite its simple nature, I thought this discussion could benefit from some visuals.

How to Use a Sector

Align the sector

1. Start by aligning the sector with the edges of the space you are dividing.  Since I am dividing the space into 4, equal segments, I align it with the number 8 mark.Align a divider with the sector

2. Next, without adjusting the sector, align a divider with the proper marks.  In this case, it is the number 2 mark.


3. Next,  walk off your divisions with the divider.


That’s it.  Four perfectly spaced divisions.  And, it only took a few seconds to complete.  No complicated math.  Simple.

If you have any questions, don’t hesitate to let me know in the comments.  Now, go out there and find yourself an old folding rule.