Cream 80-column aperture punch card printed for the United States of America Department of Defence with rounded corners with a card cut on the top left hand corner. The title “Dual Purpose Engineering Document Card” is printed in the middle of the card underneath the logo of the United States Department of Defence Logo.
This card has a space for adhering a microfilm image of an engineering drawing between columns 54 and 76. These could be adhered by removing the white paper covering the clear microfilm window. The specimens in the collection are all un-punched and none contain any microfilm images.
The card is divided into a large number of fields for recording information about a microfilm of the engineering document attached to intended to be attached to the microfilm aperture. There are with two sets of possible field combinations (referred to as the “Upper legends” and “Lower Legends” by the card). The fields in use are determined by the characters punched in column 51, a “H” for the upper legends and a “T” for the lower legends. There are five additional punch positions marked inside the microfilm area of the card; “Revised”, “Rejected”, “Camera Microfilm”, “Image Plane - Back”, “Image Plane - Front”. A full list of fields in the upper and lower legends is outlined in the appendix below.
The card is printed with “RGS 201” and “Made in U.S.A” in the bottom margin. “DD Form 1562” and “1 June 1966” are printed in the left margin. All printed columns are numbered below the 0 row, and below the 9 row.
Appendix: Field Definitions
Upper Legends
| Field Description | Columns |
|---|---|
| Type of Doc. | 1-2 |
| Document Number | 3-17 |
| Code Ident. Number | 18-22 |
| Rev. Letter | 23-24 |
| Accompanying Document Kind | 25-26 |
| Accompanying Document Number | 27-33 |
| Accompanying Document Rev. | 34 |
| [Unlabelled] | 35-38 |
| Card Nr. | 39-42 |
| Nr. of Cards | 43-46 |
| Rights | 47 |
| Control Activity | 48-49 |
| [Unlabelled] | 50 |
| Card Code | 51 |
| Sec Class | 52 |
| [Microfilm Area] | 53-77 |
| [Unlabelled] | 78-80 |
Lower Legends
| Field Description | Columns |
|---|---|
| Type of Doc. | 1-2 |
| Document Number | 3-17 |
| Code Ident. Number | 18-22 |
| Sheet Nr. | 23-25 |
| Rev. Ltr. | 26-27 |
| Nr. of Sheets | 28-30 |
| [Unlabelled] | 31-46 |
| Rights | 47 |
| Control Activity | 48-49 |
| Size | 50 |
| Card Code | 51 |
| Sec Class | 52 |
| [Microfilm Area] | 53-77 |
| [Unlabelled] | 78-80 |