That's a good way to give your finger a good shot of ATF.... if you could keep your finger on that tight. 1300 PSI plus point.
Use a gauge, CAMO
I was a med student doing an anesthesia rotation back in 1989 when a patient came into the OR for debridement of a wound gotten from a high-pressure ink-feeding line from some Pennysaver-type printing press.
Just a small set of wounds on the hand, but a LOT of dark stuff under his skin.
Surgeons started opening things up and washing/rinsing, and everything got black, sheets, their gowns/gloves, there was black ink on the floor, buckets full of towels stained black were set aside and kept coming and worse, no matter how much they tried lavaging the wounds, the tissues were black and stayed black. There was blood flow aplenty, but the tissues wound't "blanch".
The anesthesiologist I was working with spoke up at this point and said "hey, guys. Remember microbiology? We use staining to fix and kill cells, right?"
At this point, there was a small confab with the surgeons (resident and staff guy), the patient's family, and, after making a few exploratory incisions higher up, the team amputated the guy's arm just below the elbow.
That ink soaked into his hand/forearm, there was no way to rescue/preserve enough muscle or nerves (probably) to reconstruct and rehab. Luckily it didn't get into his bloodstream.
Workers' compensation doesn't compensate for stupid, just the results.
ATF (at least the stuff I got from Miles, Dexon III) is non-toxic (light mineral oil, you can drink it - it'll go through you like grass through a goose). So too is printer's ink - mostly soy-based these days I understand - but there are places you do NOT want it in your body.
There are gauges, PS testing kits available. Fingers and extremities aren't meant to work as pressure gauges.
Just FYI.
