Below is a picture of the gauge of the manual cuff I've had since 2004 and maybe used it 10 times. It's been living in its nylon carry bag within other boxes and totes since then. Since the needle is not pointing straight down, is it still accurate? If not, what's the more economical route, a new cheapie for school or get this recalibrated? Also, if it's OK right now, will the abuse of the next few years make it worse? I think it's acceptable, but want to ask people who are more knowledgeable on this.
(Is the bubble above mmHg the +/- of 3mmHg the buffer mentioned on the product card? Says it accurate to 3mmHg for 20yrs.)