Digimizer is a free easy-to-use and flexible image analysis software package that allows precise manual measurements as well as automatic object detection with measurements of object characteristics.
Pictures may be X-rays, micrographs, etc. Supported file formats are JPG, GIF, TIFF, BMP, PNG, WMF, EMF and DICOM files.

Images can be rotated, flipped or straightened. Image brightness and contrast can be adjusted.