Some horology buffs and most PuristS will be aware that the PuristSPro All-Black Rescue watch (PPro ABR) is a 178-piece limited edition that is worn with pride as a PuristS' "club watch". It is a customised derivative with 31 modifications from the origin...
What if a Puristspro watch was exhibited at the National Museum of Health and Medicine in Silver Spring Maryland or some place similar medicalmuseum.health.mil
I'm wearing mine frequently, but I have to admit to rarely use the puilse counting scale. Since it is slanted away from the wearer's field of view, it is very difficult to read. So I normally count the heartbeats during ten seconds and multiply by six, th...