Have a Marlin Glennfield 60 I've had since the 80s and was mounting scope rings on it and notice they were sitting not quite right so I took a set of calibers and measured the dovetail and the top measured 10.83mm. Okay that doesn't seem right, not what should be expect for an older American rimfire, should be closer to 12.70 for a 3/8 dovetail.
Was Marlin using the European standard on their rimfires back then?
Pulled out a Russian made 22 I have and it measured 10.94mm which is correct (or near enough) for European. A Serbian made Remington and it measured 12.65mm
Unfortunately for measuring purposes all my American made rimfires other than the Marlin 60 have either pic or weaver rails.
Anyone else have a Marlin 60 you can measure?