casement multi-point slider lock handle. seems smaller than listed products.
measures 3 1/16inch (78mm) hole spacing, 4 x 3/4 inch overall body.
sliding 'tongue' is 1 5/16 inch long/deep (35mm), 15/16 (23mm) wide at tip.
opening cut in window frame is 3 3/4 x 7/16 inch, radius ends.