2 or 2.5 inch brass n glass spg ?

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Appreciate all the comments. While the 2.5 inch may be good in limited viz or night diving it might be
a bit more than I need for most of my diving. After thinking of the shaded red I can see where the
graduations under 700 psi would probably be more visible without. Here is the one I am considering and
will probaly go with the 2 inch.

Highland Millworks Brass and Glass SPG Module
 
The only other difference I see with the Piranha Dive Manufacturing spg is the 500 psi
marking. The Highland spg pictured has just the 0, 1000, 2000, 3000, 4000, and 5000
psi markings.
 

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