No Blakesley effect and the letters around the clip don't "slant" towards the clip, perhaps @Fred Weinberg might comment. Always want to learn.
it is called a planchet. plan·chette [planˈSHet] NOUN planchettes (plural noun) a small board supported on casters, typically heart-shaped and fitted with a vertical pencil, used for automatic writing and in seances. "the planchette jerked and skittered to the upper left-hand corner of the paper"
