I believe that the people in the middle of the scale live the happiest lives. (hacked.com)
When you mix an acid and a base, they react with each other and produce a new substance with a pH somewhere in the middle of the scale. (sciencenewsforstudents.org)
You tap your toe on the middle of the scale and wait for the scale to «wake up» and show you those «double zeroes». (anymanfitness.com)