This is a big easel for handling large canvases; the model is true to life. Although no image textures are included, I have marked seams on the wooden parts to make UV mapping straightforward. It was completed in cycles, version 2.78a. All parts are meaningfully named, but to deal with my right/left dyslexia I tend to use the corners of a horse for orientation. Standing on a horse's left side, the corners are NF (near fore), NH (near hind), OF (off fore), and OH (off hind).
Parts are parented to an empty axis and grouped for linking to your own project. The main frame pivots at the appropriate place, but I haven't ventured into constraints for the struts. Well, actually, I have but it was a fail.
The easel is my first contribution, and I offer it with no license restrictions.
Edit: In response to helpful comments, I have changed the blend file so that it will render as seen in the default image. The chair is included in the default image to give an idea of scale, although you do find larger models of the easel in some studios. The chair itself is not included in the blend file.