Portfolio or "Engineering kit" for the Gromaciti?

[Ti.Horatius]

Salvete Omnes

The Engineer of Legio III has put together a kit to carry his maps, other papers, etc. I realize the following description is outside the bounds of reality. But.... was there something similiar that such a position would posess and use?

[size=75:1srmx52m]

Two pieces of thin wood or heavy cardboard of some convenient dimension larger than 11" x 17'. Duck tape them together along one of the long sides as a hinge. Cover with cloth of your choice (probably wool or linen). I used a rubber based glue to adhere the cloth to the cardboard, and covered the corners with thin leather for wear. I used heavy paper flaps inside the folder on the short ends to prevent paper, maps, notes, etc. from slipping out. cloth Handles and string tie-ties can be added as you think needed.

[/size]

How would important documents be carried, with the necessary writing implements (other than wax tablets, which were for temporary use)?

Any assistance is appreacited

Optime Valete!