Dynon D3 D2 Angle Mount.  Choose the custom angle to meet the eye from 7 to 25 degrees.    Screw size is 8-32.  Four screws included as shown.  The one pictured on the panel is 15 degree, good for a tall person.  Made to be hard mounted with #8 screws to the panel or if desired can be attached with 3M dura lock velcro.  When attahced with dura lock the release force is over 30 lb and durable.  Material is ASA UV resistant plastic.  Weight of a 15 degree mount = 57 grams.