Antique Machinist's Leather Covered Notebook Filled with Blue Prints four lens tintype waiting to emerge

waiting to emerge

but also for what looks to me like a turtle crawling along at the bottom left corner on the reverse side

works perfectly

This crazy face

Antique Machinist's Leather Covered Notebook Filled with Blue Prints four lens tintype waiting to emergeI just can't resist things like this, which were central to the lives and work of the people who once owned them, this one seeming a bible of sorts for a George F. Ingham, who I presume was a machinist of some kind. Plus I just find the blue of these blueprints so gorgeous, and all the better for all of the very precise columns and grids of measurements and calculations packed onto them. Covering a spectrum of types of rivets, wire, screws, bolts,