who made your machine? "New Glenwood" is a brand name, and it's probably made by Davis, National or White (AG Mason), though there are several other possiblities too.
Normally "Universal" is a type of needle (like ball point or Jeans) and not a machine specific size or even a diameter of needle size. Though most typically you'll have picked up a needle that fits Singer and most others. It's the most common size you'll find.