Blog > Sector
Sector Madness!
From top to bottom: The first sector I made to demonstrate whole-number divisions; my three-scale paper version; a solid wood and brass sector by burn-Heart I first…
Fractions in a fraction of the time
Here’s a page from a forthcoming book I’m working on about the core geometric truths (first principles) that underlie–and led to the development of– all our layout tools,…
Hands-on Teaching Tool
Here's a page from a forthcoming pamphlet I'm working on about the geometric truths that underlie--and led to the development of-- all our layout tools, including (basically end…
The Sector: For Free and For Sale!
If you haven’t heard of the sector, it probably means you aren’t an artillery officer or a ship’s navigator working in the 17th century! An invention attributed to…
That Snappy Sector Redux
A while back I noticed that a number of architect/builder’s sectors shown in manuscripts from the Renaissance era had the segmentation laid out along a diagonal line rather…
Sector Secrets
The theory and construction of a sector is covered in both our books, though in the softcover “By Hound and Eye”…
That Snappy Sector
Another primary use of the sector is to quickly find or create a whole number proportional relationship between two dimensions--say the width of a box to its height.…
