Easy Instructions for Operating the Comptometer
Book details
- Title
- Easy Instructions for Operating the Comptometer
- 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
Easy Instructions for Operating the Comptometer
Author: Felt and Tarrant
Year: 1915
Easy Instructions for operating the Comptometer Form 112 (booklet), Form 96 (card) 12 page stapled booklet 217mm × 281mm (booklet), 104mm × 167mm (card) This booklet is a simplified manual for using the Comptometer, containing only the basic methods that can be found in the regular manual "Methods of Operating the Comptometer". It explains addition, multiplication, subtraction, and division. It has no copyright year, and strangely does not mention the company Felt and Tarrant anywhere. It was printed in approximately 1915. Its title is listed in The 1911 Register Of Copyright Entries , and while the text is probably from that year, the pictures on the front and inside have been updated to show a model E, and a picture on the back shows a model F. A small card was included to explain the Controlled-Key mechanism and error correction. This booklet was expanded in later versions, and eventually became the main manual for the Comptometer, taking the place of "Methods of Operating the Comptometer".