took me a while to locate these,,makes the rifle complete with everything it had new in 1957,,the knob in front is micrometer click elevation adjustment and the two knobs on rear top are micrometer click windage adjustments,,I have 1.5,1.7,2.0 2.3 and 2.5mm post inserts for the front globe,,

you pretend it doesnt bother you but you just want to explode