(Note: Measurements are outside max. dimensions unless stated otherwise).20th Century : End plate component for a pivot stay. Option : Two 3/4" No. 6 slotted countersunk colour-matched brass screws.Width 45mm. (1 3/4")Height 33mm. (1 5/16")Thickness 1.5mm. (1/16")Depth of pivot arms 14mm. (9/16")Diam. of pivot hole 3mm. (1/8")Possible origin - bureau fall.