Standard boost guage measurments
 

I was woundering i am currently only using the standard boost guage in my 89 GT supra ....it reads in mmHG and goes of the guage when i flick the switch on the boost controler ...(am getting a boost guage ) was woundering what +4 mmhg worked out to be in PSI .....?

Online Conversion - Pressure Conversion

1 micrometer of mercury [0 °C] = 0.000 019 336 777 871 pound/square inch

ok so if that is the conversion rate what is the equation to figure it out because if i am running +4mmhg and i multiply it by the .0000019ect it tells me i am running 0.76psi which is not right as the stock psi should be 6psi of boost from what i ahve been told

as you can tell i am no math wizz !

:)
Look closely to that gauge...
Isn`t is there a small text reading "x 1.000" ? or something like that?