There has been a bit of chatter in our groups fb page about quilters casche log cabin not measuring up. it's been awhile since I have had to make one so was pleased that my partner this month had a log cabin as her choice so I could "road test" the pattern.
This is for Pauline who wanted it in blues, purples and pinks, and loved batiks, so I put a bit off all of it into the mix.
First here is the finished block under my 12.5 inch square ruler, pretty much spot on.
And here is a look at it without the ruler... I measure at every round and trim slightly if required. Also using a quarter inch foot helps keep it all on track..