Old Photo.Fanatic PDF Architect has a 'Print Selected' option in the menu which lets you selesct part of a document to print. Download and install 'PDF Architect' from pdfarchitect.org using the 'Free Download' button, you don't need to register if you don't want to, I've used this for years and find it more versatile than Adobe Acrobat Viewer, it also installs as a printer so you can create .pdfs from other apps by oprinting to it.
Andrew