Mmmm...... Nobody out there using these gauges, Guess everybody has their engine monitoring on the square screen these days.
So for anyone interested.
Since posting the original thread I have found more information on these little beauties. My reason for choosing these gauges (apart from me being from the old school ) was mainly for redundancy, I just couldn’t bring myself to put all my engine instruments into the one box
I have flown off ten hours so far and find these very easy to read, accurate and being electronic much lighter than the old steam driven. I absolutely love them. I have purchased (From Spruce) all my engine gauges including fuel quantity gages in the 1¼ diameter size.
What I have found.
The Spruce on line catalogue does not match the senders with the gauges. (I have notified them of the difficulties of matching the units) Some senders require gauges not listed.
Choose the gauges you need from your operating systems. Then go to the UMA web site to match the sender units. Once you have these you can match the part numbers with the spruce catalogue or in some cases they will not have these so you will have to request a special order.
It is important to match each gauge with the sender unit as listed on the UMA web site.
So I have just ordered a new 0-150 psi UMA 1¼ inch Electronic Oil Pressure gauge to go with my 0-150 psi UMA electronic pressure sender. This could take another two weeks to get sorted.
I must add that the help desk at UMA have been most helpful in trying to resolve this.
For what it is worth...my panel