Adjustable ruler marking gauge. By JSK-koubou. 15:32 video:
https://www.youtube.com/watch?v=ISaDdkenmN4
Printable View
Adjustable ruler marking gauge. By JSK-koubou. 15:32 video:
https://www.youtube.com/watch?v=ISaDdkenmN4
The need to readjust the slot width can be avoided by making the locking screw perform an automatic adjustment every time a scale is locked in place.
My version...
Attachment 43553
uses an angled brass sleeve on the locking nut...
Attachment 43554
As the locking screw is tightened down, the brass angle forces the scale against the fixed stop (also angled) on the cross bar.
A closer look at the brass sleeve...
Attachment 43555
The second threaded hole on the cross bar allows it to be used with a wider 12" scale.
A slight variant of this idea was used on my marking out tool...
https://www.homemadetools.net/forum/...7305#post36833
where a steel bar replaces the scale.
A better picture of the locking mechanism...
Attachment 43562
and, for comparison, the arrangement used on the earlier device...
Attachment 43563