Yesterday I needed to cut some 1 1/2 x 25 x 3/4 stiles. I pulled out my Stanley 16 ft tape measure and measured 25 inches and marked the wood from one end. Since I was going to be making a lot of these I wanted to be very sure that they were cut accurately so I checked it against two metal rulers and found that although both metal rulers (one an old carpenter's square and the other a new machinist's square) and found that although both agreed that 25 inches was 25 inches, neither agreed with the Stanley tape measure. The steel rules were consistently about 1/6 more than the tape measure. I then picked up another steel ruler, this one only 18 inches long and measured 18 inches plus 7 inches. This resulted in the same mark as the other metal rules. Am I wrong in expect less than 1/16 accuracy over 25 inches of the Stanley tape measure? FWIW, I checked it with a 25 ft Stanley tape measure and it measured the same as the 16 ft tape measure. I ended up using the mark from the metal rule and then cut all 16 of these stiles to the same length using a stop-block. It was more important that they all be the same than that they are exactly 25 inches. Yet, 1/16 in 25 inches means a lot when you are trying to join multiple pieces together squarely. Any thoughts by other woodworkers? Is it just Stanley or was I expecting too much from a tape measure?