Mercer or John Bull?

[69002]

Hi all, might be a really silly question, but as I'm a newby, I hope you will all be gentle with me.

I have acquired several plunger type dial indicator gauges.
amongst them, I have a Mercer and John Bull gauges in both .0005 and .0001.....They were in a batch of spares and repairs and alll four work now.

Question is, do I keep the Mercers or the John Bulls????
Answers please and why?
Many thanks and be prepared for a lot more silly questions.

 

[DJP]

If this is a poll, I have Mercer in my collection and they are my most trusted gauges.

 

[69002]

well I suppose it is really, I don't know whether the Mercer is a better make or the John Bull gauges.
Two I shall keep, and the other two will be sold on.