Sean Breheny wrote on 30/05/2017 14:39: > Trevor - how did you manage to go to page 1290 of their catalog? I > can't find any mention of their catalog on their site and google > isn't too helpful, either. My Google Fu is better than yours? ;) First result in a search for "9fg 9fy 9ff steel" Catalog link=20 http://www.hoffmanonline.com/stream_document.aspx?rRID=3D103421&pRID=3D1024= 37 > You do look close. Maybe... > The box is puzzling, though, since you wouldn't go to the trouble of > making such a nice box for something which was not an instrument > (i.e., something which gets installed and not touched again). I don't know, calibration? > I do think these are filter related, though, because if you look at > the circumferential holes they are not clear holes all the way > through on any of the disks. The ones with a letter F in the number > have a pink substance viewable through the holes and the two without > an F have a grayish color visible through the holes. They also look the the screens I use for mincing on my Kenwood Chef, but=20 no idea about the plugs in the bottom left. > It is also interesting that the designation starts with 9 and there > are nine disks. Yes, it is curious. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .