I have a large table and my screen is not big enough to take 1 screenshot of it so I was wondering if there is any way I can take a screenshot of the whole table at once?
Two options that I see are:
Take lots of individual screenshots and overlap them in Paint. This is fairly easy to do, just change the image width and height to support the extra shots.
Get some virtual machine software, install a basic OS and window manager that allows for changing the size of the screen (e.g., Linux with Enlightenment), take the screenshot within the virtual OS and transfer it to your main system.
Use the Firefox web browser with the screengrab extension, as found in the answer to this question.