Application !!BETTER!! Download Ruler
Yuk Walke
My first thought would be that the PPI and screen size for each device is hard-coded into the app. This seems like a lot of effort and a recipe for a million mistakes. Is this really how they have to do it? It would need to be tested on each different device to ensure it works correctly. I only have access to my iPhone 5S. Might they have different images of rulers for each different device? This would take up a lot of space on the phone.
I've seen similar questions on SO about drawing rulers, but (correct me if I'm wrong) they don't seem to have a solution for maintaining accuracy for different screen sizes and PPI. They all seem to say "it's impossible". If it's impossible, how is it done?
A technique for measuring sectional plane of nuclei with the help of measuring ruler is described. The ruler may be of any transparent or opaque material with contours of measuring figures plotted on it. The area of the latter corresponds to that of nuclei projection maximal for this or that class under definite magnification. The article comprises also calculations of classes of nuclei, areas of measuring figures. The process of measurement consists in confrontation of the projection of the nucleus under study with measuring figures plotted on the measuring ruler in strict sequence from a smaller figure to bigger one.
Body surface positioning ruler was used to mark the rib fracture on the body surface. (A) Measurement of the distance from the broken posterior rib end to the center of the sternum. (B) Measurement of the distance from the broken side fore rib end to the center of the sternum. (C) Body surface identification of the broken end of the fracture. (D) Body surface range of bony thoracic surface tunnel.
Minimally invasive surgical incision after application of the body surface positioning ruler. (A) Minimally invasive incision in anterior chest wall. (B) Minimally invasive incision in posterior thoracic wall.
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