This is a Hybrid Taylor Florida Precision Barograph. It has been tested for six weeks. It is clean and includes 52 weekly charts, pen and ink. If you prefer fiber pens, they are available from 1. Cole-Parmer: Oakton Hygrothermograph pen and from 2. Ambient Weather: Fischer F51079A-01R Precision Barograph Accessory 11-1235 [...]