Welcome. Carla.
I couldn't find a picture of Dressmaker Model NZ-708F. Dressmaker was a badged name used on many different machines. I'm guessing that it would take either a
metal 15 or possibly a metal class 66 bobbin. Without seeing the machine and bobbin case it is hard to say. I have found machines with different badge names
and different model numbers that are nearly identical. Sometimes the new metal bobbins do not have a large enough notch to work with some vintage machines.
If you could post a picture of the bobbin and the bobbin case (
The machine, too), maybe we could help. Most pictures need to be reduced in size to be able to post here. We like pictures
Janey - Neat people never make the exciting discoveries I do.