Had one of these sitting around. gave the frame a decent clean up. Tried a wider blade,,
IMG_2474 (640x480).jpg
As this 12" blade was a bit too short to make a frame saw with.....
IMG_2475 (640x480).jpg
11 ppi, crosscut.....needs sharpened, anyway. Dug around, and found another blade..
IMG_2476 (640x480).jpg
I have no idea who made the frame...both ends are adjustable...the blade?
IMG_2477 (640x480).jpg
At least it can cut some brass or copper items....
Have another such hacksaw....but it is a single adjuster frame. I'll have to dig it out, sometime, and find out the maker on that one.

First one I have seen with length adjusters on both ends....