Oooohhh Nooooooo!

Didn't find any search results for "15t" bobbins. Most of the Janome bobbins are plastic class 15 bobbins.

I'm still missing two machines that I have long bobbins/shuttles for - I sure hope they are working to lure a machine into my path so they can be used as intended!

Unfortunately no dimensions with this c. 1949 chart.
Jon

Thanks for the reference Cathy...I have Pinned to Pintrest for future use! You are the BEST~

And thanks to you too Jon...I need to dig out all the bobbins and at least sort them by matches

My Montgomery Wards rotary takes a different bobbin...........the center hole is bigger. Which means my side kick bobbin winder won't work.

It may be true that orphan bobbins call out to the machine they belong to. There were class 66 bobbins mixed in the drawer of my 15-91. When I looked for a treadle, I ended up with a 66.

I don't know if this helps or not, but here it goes.

http://www.bobbincentral.com/which-bobbin-fits/

Also Superior Threads has a chart under reference guides called bobbin reference guide.

Mary

It's likely the Wards takes the same as the Eldredge/National at the top of the chart Jon posted - most of their vintage machines were made by National.