Exceptional Earlyish 19th Century Trigonometry Notebook with Watercolor Illustrations vintage balancing toy 15 1/8" l x 2

15 1/8" l x 2 3/4" t x 1/16" thick

and initialed in marker by its one time owner on the underside of the base

with a lot of dark spotting on the creamy white paint

3 1/2" tall x 3 1/2" wide x 2 1/2" deep and in very good vintage condition

as under-appreciated today

Exceptional Earlyish 19th Century Trigonometry Notebook with Watercolor Illustrations vintage balancing toy 15 1/8" l x 2I've bought and sold a good handful of 19th century maths and penmanship notebooks now, and this I think is the most beautiful of the former that I've had in my possession, incorporating wonderful little ink and watercolor drawings of houses and rivers and lighthouses into diagrams applying plane trigonometry. The notebook appears to be partial, with a few pages at the end (or beginning) facing in the opposite direction, but what is here is for the