Adjustable sight for hot shoe

Inspired by both Bikecyclist's Parametric Sport Sight and walterkort's Microphone hot shoe side mount, this combined them but added some adjustment - I found that the sight was aiming too low (at least for long telephoto work) and so made a simple adjustable one.

This allows you to use the sight to 'rough aim' any lens, including a long telephoto, useful for tracking moving/flying subjects so you can anticipate more of the action or encounters, especially when shooting video. Aim the lens at a high-visibility target while locked on a tripod, then adjust the sight to match it, and you're all set.

Parts are intended to be fine tolerance for snug fit - some sanding/shaving may be in order, depending on your printer and settings, but it shouldn't take a lot. No glue should be necessary. The sight is intentionally a little low so the slider can bring it up to ideal position.

Assembly: You can print all together or separately as desired. Clean edges and insert Target into hole on Ar