Ray, it's a 4" actually.
Guys,
I have another question on DRO's. Matt sells the "Easson ES-8A 3 axis DRO" and the "Easson ES-12 3 axis DRO". Are there any other advantages the ES-12 has over ES-8A? I know the ES-12 has a graphics display but am not sure how useful this is over the 3 axis display of the ES-8A.
Thanks,
-Joe
I got the ES-12 after waiting patiently for Matt to first get them in. I had the ES-8 for a short period of time before that. I never used the line & bolt hole pattern functions on the ES-8 but the graphical display on the ES-12 make all those features visually easier to use. I love the ES-12 and was set on getting one but functionally they do the same.
http://www.hobby-machinist.com/showthread.php/9885-My-PM45M-PDF?p=105433&viewfull=1#post105433