I now own four of the Gillette Adjustable razor types, so I thought I would redo my comparison graphic. I made measurements with my new digital calipers. The weights were gleaned from the Internet. Gillette also made a bottom dial and a toggle. The bottom dial and toggle are very hard to come by and when you do, they are very expensive.
The Fatboy or 195 is the shortest and heftiest of the four razors. Its handle is the "fattest" of the three. The Slim's handle is about the thickness of a standard pencil. The Super 84 is just a tad longer than the Slim. The Super 109 has the longest handle at about 4 inches and is about mid-way thickness between the Fatboy and Slim. The Super-84 and Super-109 are also referred to as Black Beauties.