I'm about to buy a pressure-push gauge to measure dilation force.  The NK-30 by M&A Instruments (
$50-$70 USD on Amazon 🔗 [Link: amazon.com/NK-30-Mechanical-Analog-Gauge-Force/dp/B00L5VP93G/ref=sr_1_3/]) measures 30 Newtons (3 kilograms, 6-1/2 pounds).  I've heard Dena and others say 2kg/4lb is the goal or reasonable limit for dilation.
I've never heard of a surgeon requiring or providing this type of gauge, but it occurred to me I have no clue what 4 pounds of dilator pressure actually feels like.  I might have been under- or over-applying pressure since starting dilation a half year ago.  I know the common-sense advice is apply firm not excessive pressure, but I'd like to check with more accuracy than that.
Any thoughts?