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I've got two Clauss USMC razors (6/8) that both have short blades - roughly 2 3/4" long or about 1/4" shorter than normal - in actual use the 1/4" difference is greater than you would think. And...

I believe the TI "super gnome" razors are fairly short - maybe someone here that owns one will chime in with actual measurements. If you're willing to go vintage then the Heljestrand 30-series...