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Fred,
I agree with Jeff.  I went with all non-TSO 2 1/4" UMA backup gages in my panel
rebuild.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX  76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Nov 8, 2011, at 4:08 PM, Jeffrey Roberts wrote:
> 
> Cost. Thats about it Fred... ;-)
> 
> Jeff R. N128LJ Gold Rush
> 
> On Nov 8, 2011, at 3:49 PM, Fred Klein wrote:
> 
>> 
>> I'm about to purchase back up "steam gauge" altimeter and ASI; 2.25" UMA 
>> instruments
are preferred mfg'r.
>> 
>> Anyone care to opine as to the merits of buying TSOed or Non-TSOed gauges?
>> 
>> Thanks in advance,
>> 
>> Fred
>> A194
>> 
>> 
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