Thank you Wendy for the information of your "Oregon Scientific Wireless Weather Station"
I know of this device, it communicates the information from the remote sensors, to the display unit.
You may not be aware of it, but, the radio frequency it uses, is probably is the same as used by the wireless keyfob for your car.
I used to calibrate pressure meters for use in gas monitoring systems. The calibrator indicated pressure in mBAR and psi.
1013.25 mBAR (1.01325 BAR) is the world average pressure at sea level. (Annual average)
I wish I still had the equipment
In addition to UKAS Temperature Calibration, I also do UKAS Humidity Calibration. Accuracy of reading (e.g. 45.37% RH) is more than adequate for most people.
We supply a Humidity and Temperature combination (Thermo-Hygrometer) device that we calibrate in the Lab.
We also supply a UKAS Calibration Certificate for them.
Time is a bit short (we're very busy right now), to get one calibrated to bring to Arillas next week, it would've been nice to check it against your readings.
Maybe I could post one after the holiday?