Jig id?

[festal]

When I picked up my ulmia base, seller gave me this stuff
Any ideas what this is?

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[Oldwood]

I think the parts on the right side are from Leigh’s Multiple Mortise & Tenon Attachment.
https://www.leightools.com/multiple-mortise-tenon-attachment/

It does not look like the main body of the jig is there, so maybe he was using the parts on the left to accommodate somehow??

 

[festal]

I think the parts on the right side are from Leigh’s Multiple Mortise & Tenon Attachment.
https://www.leightools.com/multiple-mortise-tenon-attachment/

It does not look like the main body of the jig is there, so maybe he was using the parts on the left to accommodate somehow??

Ah that’s what it is. So main part is missing. No idea how it was used. Got my bench from estate reseller and he had no clue either

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