Also, on a mandolin there is usually not a dot on the third fret.
Type: Posts; User: JonZ
Also, on a mandolin there is usually not a dot on the third fret.
The first page of images in a search of "mandolin" resulted in the marker always on the 10th, instead of 9th, fret. So you might want to at least update your default.
On my mandolin there are markers at 5, 7, 10, 12, 15. I don't know what is standard. An image search, like dmcclure did would do the trick. Or you might just look at what Gibson does as the standard,...