Kenn,
I believe this is the same press described in a post by eaglemike a while back. He describes it as a multi-station press designed to be less expensive than the Progressive and indicates that only a dozen or so were made. I know of six including mine. Some believe the Inline predates the "Progressive". I'm told that the 1937 Phil Sharps book "Complete guide to Handloading" has a picture of the Inline but makes no mention of the Progressive. Of course we know the patent for the "Progressive was filed in 1933 and granted in 1936.
The powder magazine is nickel plated brass, the same as used on the Pat. Pending Progressives. The powder magazine has a wider opening at the bottom and no built in baffle.
Here is a link to eaglemike's post.
http://www.starreloaders.com/forum/index.php?topic=238.msg583#msg583Among the Star items I acquired was a box of parts for the Inline. (Actually, I had a feeling they were Inline parts, but wasn't sure till I acquired the two Inlines.) Among the parts were a number of dies and expanders. None have a manufactures name and many are unmarked as to caliber. I assume they were made by Star. Among those that are marked are .270/35 WCF, 22 Hornet, 45 (ACP?), 38 Special and 44 WCF.
If you look at the side of the Powder Magazine "Housing" you will notice two layers. You can remove one layer and install a powder slide that is half the thickness, one of which was among the parts. And yes, both powder slides are adjustable.