Also a Ilford EM-10 will get you close. I shoot either 8x10 or 4x5 and will make an 8x10 enlargement of each shot. With the EM-10 I find my D-max point take a meter reading and set the enlarger to the pre-determined time and f-stop. 80% of the time I get a good enough idea on weather I want to mess with that print or not. I also have a pie wedge, But prefer the EM-10