Manual Of Mechanical Calculation By Means Of the Calculating Machine "UNITAS"
Book details
- Title
- Manual Of Mechanical Calculation By Means Of the Calculating Machine "UNITAS"
- Publication year listed
- 1915
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Manual Of Mechanical Calculation By Means Of the Calculating Machine "UNITAS"
Author: Ludwig Spitz & Co. G.m.b.H.
Year: 1915
Manual Of Mechanical Calculation By Means Of the Calculating Machine "UNITAS" 1915? Ludwig Spitz & Co. G.m.b.H. 69 page booklet 160mm × 239mm × 4mm This is the English language manual for the Unitas calculator, a mechanical calculator with a stepped drum mechanism. There is no copyright year. A small piece of paper has been glued in to explain the use of the keyboard. As keyboards were introduced to this machine in about 1914, I assume this manual is from around that time. It also contains a section with various useful lookup tables, and a section with exercises.
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