Help with marquart neck turner

[Concha]

I was hoping I could get some of you fellas to help me find mandrels for this old neck turner. I have heard that maybe Sinclair and or K&M fit. Is it to much to ask for someone to look at theirs and put a pair of calipers or a mic on the big end and let me know the brand and dimension. Thanks in advance.

Concha

 

[JRS]

K&M will work in the Marquart turner.

 

[Concha]

Thanks JRS. That is what I needed. I thought that K&M ended up with the original design and modified it. Wasn't sure.