I have knobs and a extension shaft for sale or trade
Knobs take a standard 1/4 inch shaft but the large one needs a half moon shaft. The others use set screws a few don't have the screws but can pick up at any hardwear store. prefer to sell all knobs together but make a offer.
The shaft was used to adjust a pot remotely but has many other uses. It is .189 inch diameter and just shy of 11 inches long and the collars have a set screw. The other part has a bushing inside I did noticed it had some slop with the shaft placed inside but not a lot.
Trade will have priority over sell. For trade I need a spider for 10 inch tube, prefer a curved spider and would consider home built if high quality. Also looking for low profile focuser. If you wish to buy make me a offer on any or all
If you have questions please email me