I used to carry a waist pack, but now I've gotten rid of some non essentials and am slowly working on carrying my stuff in a jersey pocket.
One of the heavier items I carry around is a presta valve tire gauge.
Why, I dunno.
I suppose it's some OCD thing to have the correct amount of air pressure in my tires after I've had a flat.
I got one of them Meiser/Accugage thingys, we'll see it in a minute.
Well once on the eVilness, I saw this old Dunlop presta gauge that looked like a golf pencil.
Unfortunately, it went for something outrageous so my hunt continues for a small presta valve gauge.
Sort of.
I mean I found this:

It is what appears to be the head of a bicycle pump, I mean it's from Silca, but you can use just the gauge part.
As you can see it's sort of on the small side, but still a bit heavy as it looks like it's made of steel.
How does it work?
Well I used it once and then it quit.
Then it started working again.
I have no idea what happened except maybe some dirt got into the valve part cause after I blew it out it worked again.
Okay, my Specialized pump at 4 bar, the Accugage, and the Silca thingy:



Not too bad.
Let's try 6 bar, same sequence:



It seems to confirm my observation that the Specialized gauge reads a bit "hot."
Then again, I've only had the Meiser/Accugage to test against, but now the Silca seems to read around the same.
The Silca thingy was like eight bucks on the eVilness and as soon as I'm done here I'm going back to buy two more.
Small and cheap, something to toss in your seat bag.
Especially if you are like me and wondering about the air pressure in your tires bothers you to no end.
Oh yeah, Italian Air Pressure Goodness(IAPG).