Online Length Measurements on an Image of the Shroud of Turin
The Secundo Pia's photograph (1898)

You can do online length measurements directly on the image. Its calibration is appr. 1px = 1.396mm; in fact 1px = 1105/791mm based on the width of the Shroud.

On the right, the current coordinates (x,y) should be displayed as you move the pointer mouse over the image; with the length in millimeters from the last fixed point. Every time you click on the image, new coordinates are fixed and a length is calculated from the previous coordinates. (You must have Javascript enabled in your browser. Currently it does not work with the Safari browser.)
Unkown coordinates until you click on the image.
Unkown coordinates until you click on the image.