Details and Image
|Date||Scale Length||Area of Use
|Disk||AT-Culator||Albany Enterprises||USA||Metal /Plastic ||c. 1969||Dia. = 21 cm||Chemistry & Metalurgy
Notes: "1) A very interesting and rare slide rule similar to a Gilson design, but specialized for atomic element and mole fraction calculations 2) Unit has a spiral scale on the front side and consists of 3 concentric disks, one metal and 2 plastic 3) Designed at the US bureau of mines in Albany, Oregon."