Fig. 2
From: Smartphone citizen science: can a conservation hypothesis be tested using non specialist technology?
Copy of the Wagga Wagga Daily Advertiser from 1886. The figure shows six white circles indicating the typical positions used to make two sets of triplicate measurements on a page close to the beginning and centre of each folder. Such sites were used for the X-Rite I1 Pro, with triplicate measurements made for the mid page section in fewer selected journals using the iPhone6S