That looks like inches v centimeters of mercury “pressure”
-6 inches would equal -15 centimeters
2.5 x 6 = 15 (2.5 x inches = centimeters.
most in here talk inches so 3-4 Hg would be you smaller blue numbers.
Later Skepdick
Character is doing what is right when nobody is watching....
salvatore1975
In the Dr Joels guidelines it says explicitly do not go over -10 HG although I reach that pressure in about a minute and there routine says do 10 mins then relax massage then another 10..etc so I am presuming it means get to that pressure and hold not pump for the remaining 9 or so minutes. Is this the case pumpers?
Also any suggestions for concealing this as I don’t want the lady to know, and doing 20-40 mins a day is hard to do without her knowing. What do you think?