I have that exact same cabinet! I love, love, love it! The top section moves down like that so you can use the free-arm on your machine which was a fairly new feature at the time the cabinet was made. I began teaching in 1979 and used my first pay check to buy it!!!! The bottom of mine was damaged in a flood several years ago but I couldn't stand to get rid of the cabinet so my husband replaced the bottom and put new casters on.