I picked up a cheap 1999 Raleigh M40 mountain bike for my spouse to use as a winter bike. It has a quill stem and the handlebars were set really low. I unscrewed the nut to raise the stem and I only can get a half an inch. My spouse then interfered and unscrewed the stem entirely and pulled it out. It has the angled bottom but no wedge. Is the part missing? How do I figure out what to get to replace it? Or did it simply come that way? Or is it down in the tube someplace?

If I pursued getting an entirely new stem (on that is adjustable might be good for him) how do you measure the stem size?

Thanks for any help you can get me.