As an engineer, the trailing 0 is significant: it indicates with what precision it was rounded to. [0.5, .15) could become .1, with 1 significant digit, but not

As an engineer, the trailing 0 is significant: it indicates with what precision it was rounded to. [0.5, .15) could become .1, with 1 significant digit, but not .10 with 2 significant digits. Doubtful it matters in this case, but that extra zero can convey extra meaning.