Locator Grip - A handle design that is dished in such a way as to predispose the bow hand to consistent placement on the grip.
A recurve style grip can or is a locator style grip by the above definition. Most recurve grips are pistol grip types shaped to personal taste.
The bowyers bench forum has a glossary of terminology at the top of the page. That's where I got the quote from.
Specs will be hard to give if no info on what type of bow you are planning to make.
Luck on your first build and welcome to TG