You can see the HP 30S features and overview on the HP website at:
http://www.hp.com/calculators/scientific/30s/
They're selling it online for $15.99.  Believe me, it's worth the price!

You can also get to descriptions of their other calculators through:
http://www.hp.com/calculators/

David Shatto
Los Angeles


On Mon, 04 Aug 2003 11:18:15 PST David Shatto wrote:

> I have an HP 30S (Hewlett Packard) that has many built-in measurement
> conversion functions, as well as the standard arithmetic, trig, and some
> statistical and other functions.  It has a 2 line display which allows
> you to edit an equation after you've entered it.  All for less than $20!  
> I think it was about $18 - I bought it 2 months ago.  HP also has other
> more basic and more advanced calculators with measurement conversion
> functions.
> 
> This one is a little confusing with many functions accessed through "2nd" 
> and "Mode" keys, but it's not too hard to figure out (if you have the
> patience).  I really haven't used the measurement conversion functions
> much, but there are certainly some very interesting features.
> 
> For example, you can enter 500 feet, then cycle through the converted
> values for: m (152.4), yard (166.6666665), mile (0.09469697), km
> (0.1524); all with the repeated pressing of one button.  It enables easy
> conversion between the following units:
>  - inch, cm, mm, mil
>  - feet, m, yard, mile, km
>  - feet^2 (square feet), m^2, yard^2, mile^2, km^2, acres, hectares
>  - lb, kg
>  - Tr.oz, oz, pound, g
>  - � F, � C
>  - gallon, liter, B.gal, pint, fl.oz
>  - Cal, kJ
>  - atm, kPa, mmHg, cmH2O
> 
> Obviously HP put some thought into making this a useful device.
> 
> David Shatto
> Los Angeles
> 
> 
> On Mon, 04 Aug 2003 13:31:18 -0400 "Howard Ressel" wrote:
> 
> > I use a Conversion Calculator Plus 1-Step marketed by SE Kaps in San
> > Deign. I have seen a similar metric calculator marketed under a
> > different name (same calculator made in China different color). Its
> > about $40. Its a good conversion calculator but it doesn't function well
> > as a regular calculator (poor key layout, no trig or advanced function).
> > The screen display is poor quality and the LCD can fail  after a few
> > years giving false readouts. 
> > 
> > We also use a Radio Shack Cat. No. 65-828 converter. Its simple but
> > limited (IE. converts cm-in. but not mm) and its a bit harder to use.
> > 
> > Does anyone have suggestions or recommendations for metric conversion
> > calculators other than what I mentioned above? (And no comments that we
> > shouldn't need them since we are working only in SI, reality doesn't
> > work that way).
> > 
> > 
> > 
> > Howard Ressel
> > Project Design Engineer, Region 4
> > (585) 272-3372
> > 
> 
> 

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