Width across bevel at the top: 1"
Width across top flare: 1 3/8"
Width at screw: 1 1/2"
Width at CZ log: 1 1/2"
Width at very bottom: 1 3/8"
Length across mid-line of grip: 3 3/4"
Of course, I may be off a bit here and there, but the above should be within 1/8th of an inch, probably more like a 1/16 margin of error.
(SP-01, standard/base model)