Brs par grid questions

[chriss1992]

When brs shows a par grid does anyone know how big the total square is or how many inches between each value?

 

[Chuk]

I'm not sure exactly and its been a while since I watched one of those videos but it can be figured out pretty easily. Take a look at the size tank they are using (usually a 2 ft x 2 ft and 4 ft x 2 ft) and divide the number of readings they report by the square inches in each tank and there's your answer.