Featured here is an adjustable floor shtender. Its height can be adjusted from approximately 30" to 45". The book holder itself can be adjusted from approx. a 90 degree angle or less, to fit your comfort position.
Other Details
Base Dimensions (Bottom Part):
27" High
Book Holder Dimenssions - (Table Top):
18.5" W x 15.5" L and could be adjusted to 12 positions