According to Parker Hale these sight 'adaptors' came with a leaflet indicating what "corrected elevations" to use as the original graduations on the rear leaf were obviously obscured by the 8/53.
I'm looking to put an 8/53 with a variable iris and coloured lenses eyepiece onto a No7 Mk1 so if anyone has a copy of the leaflet (or could post the "corrected elevations") I'd be grateful.
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