Hi Kim

I am looking for some information about grid terminology as I have received
conflicting info in the past.  The footside measurement seems to be
consistent to me. It is basically ½ of the squares per inch since you are
counting every second dot.

No - it's twice the squares per inch (or whatever unit you are using)

If you are using a graph paper with 10 squares per inch and the pinholes are on every other intersection the distance between the pinholes will be 2/10 of an inch.

The “straight” measurement is what I have heard
people use differently. I have heard people refer to the diagonal pin count as the “straight pin holes per inch” count, and I have heard people refer to the number of dots along the straight portion (the number which would be double the footside number) as the “straight pin holes per inch” count.

You do need to clarify whether you are referring to, say, 1/10" graph paper, or to a pattern with 1/10" between footedge pinholes.

Although most torchon patterns will start off on a set size of grid, often drawn over 1/10" or 2mm graph paper. it is so easy nowadays to enlarge or reduce a pattern by any amount. Also some designers will turn the graph paper through 45 degrees and use every intersection for the basic grid. That grid will have footedge pins spaced at nearly one and a half times the length of the graph paper squares - you can work it out exactly using Pythagorus's Theorum.

That's why my table of thread sizes : grid sizes refers to distance between footedge pins.
http://paternoster.orpheusweb.co.uk/lace/threadsize/threadsize.html

Before I move forward with a project I am working on I want to get this ironed out and would appreciate any clarifying comments. Right now I am just dealing with simple squares (Torchon) but welcome any advice about
other grids before I branch out.

The other sort of grid is a point ground grid with working angles of anything between about 50 degrees and 60 degrees. In the past grids were drawn using maybe 3 squares one way and 4 squares the other way and in-between pinholes added by eye, but that's "old technology" Now, it's so easy to just take a regular 45 degree torchon grid and change the proportions with a click and drag of the mouse to get any working angle you want.
45 degree working angle makes a square
54 degree working angle makes a pentagon
60 degree working angle makes a hexagon.


Brenda in Allhallows
[email protected]
http://paternoster.orpheusweb.co.uk/

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