Here's what I use to monitor the weather.
Nimbus Ultra Thermometer (spec +/- 0.2°F)
RM Young FARS for the Nimbus sensor
Kollsman Altimeter Setting Indicator (spec +/- 0.007 inHg)
Close up of the dial
Belfort Barograph (spec +/- 0.005 inHg)
Close up of the pen
Aquatech Barograph (spec +/- 0.007 inHg)
Princo Mercury Barometer (spec +/- 0.001 inHg)
Kessler Min/Max Thermometers and Psychrometer (spec +/- 0.4°F)
Standard Rain Gauge
RM Young Wind Monitor
OSI WIVIS (Visibility and Precipitation Type) with Hail Sensor
Heathkit IDW-5001-C (Factory assembled)
All my old Heathkit stuff I used when I was a kid. Just sitting in a closet now collecting dust.
At some point I want to get a dewpoint sensor and ceilometer.