Numbers on oil pressure gauge

[Andreas]

Huib,

I will check these details on the weekend again, because i am very busy the next day´s.
So we can talk about it then next week.

bye
Andreas

[Thomas]

Huib,

if you need yet another suggestion as to your gradation problem, here is mine:

It is quite common in pressure measurement devices to express values in either relative, OR absolute values. What that means in this case is that the 0-25-50 devices measure relative values as compared to the outside pressure which is already at 1 bar (=14.5 psi), whereas the 0-30-60 would then measure absolute values (as compared to void). Pressure meters sometimes have a marking saying either psig (for gauge) or psia (for absolute) to make that distinction.

[Andreas]

Hello Huib,

this weekend i have had time to come back to this item.
I have had a check the part and the drawing inside if the manual and it
seems the between the first and the second series is a different.

I wrote about the second series and there i can say that it works like
I wrote in my first mail.
If you have other information please contact me again

bye and best regards

Andreas