Unusual and Beautiful Old Handmade Ruler (?) early speller where she studied under Mexican

where she studied under Mexican muralist Rufino Tamayo and the abstract expressionist Vaclav Vytlacil

there is a tear to the preface page

I believe I have them correctly oriented in accordance with the placement of the text on reverse

but super sweet

Threaded lid screws off easily and holds tight

Unusual and Beautiful Old Handmade Ruler (?) early speller where she studied under MexicanI really don't know anything about this one, but found it at Brimfield and couldn't put it down. I presume a ruler or guide of some sort, with the increments along one side approximately one inch and the shorter ones about half an inch. For me the angled lines really make it. lending a sense of movement and three dimensionality to the whole thing, and the wood, which I think may be boxwood, is lovely. With what looks to be some faint handwritten text