I have measured my sit bone width a couple different times, once at the bike shop on their measurement device and end up with about 115mm. I have a Brooks B-17 on my bike that I’ve ridden for over 800 miles and the saddle shows well defined dimples where my sit bones usually rest. But if I measure the distance between the dimples with my calipers, the number is about 80mm. If I set my calipers to 115mm and hold them above my saddle the calipers are way beyond the dimple areas on the saddle. Just curious, what gives?