And by Hi-res, I mean 1/3 INCH of elevation change or similar!

I saw
this kit in the Ramsey Electronics catalog yesterday.
Measure Elevation To A Third Of An Inch...
And Air Pressure In NINE Formats!
Accuracy And Sensitivity Beyond Belief!
* Pressure resolution greater than 0.0001kPa!
* Super elevation resolution better than 1/3"!
* 128 x 64 pixel graphical display!
* Shows realtime elevation & pressure changes!
* USB computer interface for easy data transfer!
* 13,824 samples of FLASH storage available!
* Small coat pocket size
* Input for storage of data when YOU want it!
* Multiple built-in alarms
* Settable offsets for pressure and elevation
* Built-in Li-Ion rechargeable battery
* Built-in charging & power management system
* Run & charge from internal battery, USB power, or external 6-30VDC source!
* Runs 2 days on a single charge
* Simple graphical menu based operation
THE BEST JUST GOT BETTER!
The response to the UP24 was incredible! Customers from professional land surveyors, meteorologists, scientists, pilots and hikers to the curious hobbyist were overwhelmed with its sensitivity and accuracy. Reading realtime elevation to a third of an inch blew their minds! Even with this response we considered it a challenge to make it even better... and we sure did! Introducing the next generation UP24B!
First, for extended field use, we designed an internal lithium ion power cell and a state of the art power management system. Now you can charge the internal power cell from either an external source of 6VDC to 30VDC or a standard 5VDC USB connection from a PC, laptop, or USB charger! The power management system determines the best charging source to use as well as operates the UP24B while keeping the lithium Ion cell at full charge. Charging status and battery condition displays are also provided.
Next we added a "MARK" feature. This allows storing a single data point reading when YOU want instead of blindly storing readings at the selected sample rate. A connection jack is provided for a simple contact closure to make a reading. This closure can be a "dry" set of contacts or electronic closure. Data storage is in comma delimited format for easy loading into a spreadsheet. Each time you enter the "MARK MODE" a new data block is started allowing you to easily identify multiple sets of data. Current data is constantly displayed for your convenience in mark mode.
Finally, we streamlined the controls to make a more compact profile. The rotary menu navigation dial has been replaced by contactless proximity buttons for more reliable operation! Just touch your way through the menus without any dials or switches!
THE ULTIMATE PRODUCT FOR THE SERIOUS, THE CURIOUS, AND THE PROFESSIONAL!
We did it again! The UP24 was one of our most advanced kits to date. Rather than resting on our laurels we made it even better and the new UP24B is an absolute MUST for anyone serious about the environment around us! But the applications only begin there. The unique design allows unprecedented super high resolution measurements and display of absolute atmospheric air pressure and elevation. Hobbyists and weather enthusiasts absolutely love it! Land surveyors, scientists, and pilots have made it a "must have"!
ELEVATION TO A THIRD OF AN INCH!
I have written a lot of catalog pages and a boatload of specification sheets but this one is a challenge because the applications are endless and the performance characteristics are beyond description! The UP24B senses ambient air pressure and critically calculates elevation with unheard of precision!
Using a highly sensitive sensor and 24-bit A/D converter in a special noise-immune design, less than 1/3" of an inch of elevation resolution is achieved! YES, we said 1/3 of an inch! This high accuracy and resolution opens the door to a host of sophisticated environmental air pressure monitoring applications.
AIR PRESSURE IN ANY FORMAT!
Unlike your normal run-of-the-mill barometer, air pressure is sensed in Pa's or kPa's. What are those you may ask? Pascals or KiloPascals. However, don't be afraid, for your convenience, and to fit any application you may have, it is also displayed in millibars, bars, PSI, atmospheres, millimeters of mercury, inches of mercury, and feet of water! Take your pick! The range of the UP24B is 15kPa to 155kPa. That also means:
*
15000 to 155000 Pascal's
*
150 to 1550 Millibars0.15 to 1.55 Bars
*
2.175566 to 22.48085 Pounds per square inch
*
0.1480385 to 1.529731 Atmospheres
*
112.5093 to 1162.596 Millimeters of mercury
*
4.429498 to 45.77148 Inches of mercury
*
5.02 to 51.9 feet of water