Stanley Victor No. 806F Rule

Can anyone tell me something about my Stanley Victor No. 806F 72" folding rule? I picked it up at an estate sale and am curious about it -- how old, scarcity, etc.

Thanks.

IMG_2730.JPGIMG_2731.JPG

Attached Images

• IMG_2730.JPG (132.8 KB)


• IMG_2731.JPG (80.5 KB)