(Note: Measurements are outside max. dimensions unless stated otherwise).
18th Century : English style escutcheon with very small 0.5mm bobbin flange overhang.
Overall height 23mm. (7/8")
Width 12mm. (7/16")
FLANGE
Outside height 21.5mm. (7/8")
Insert width top 10.5mm. (3/8")
Insert width base 10mm. (3/8")
Depth 5mm. (3/16")
Thickness of flange (variable) 2mm. (1/16")
KEYHOLE
Height 18mm. (11/16")
Diam. of hole 7mm. (1/4")
Width at narrowest part of neck 5mm. (3/16")
Width at base of taper 7mm. (1/4")
Usually glued in or could be pinned from inside flange.