Flower bulb forcing disk calculator



Length NR
Number of scales NR
Country of origin Netherlands
Country of manufacturing  
Year of manufacturing  
Status of the slide rule Mint
Material of the slide rule Plastic
Type of cursor NR
Status of the box Mint, vinyl.
Status of the manual Mint. Included in the inside of the sleeve.
Collection number 230
Further comments A very specialised calculator disk to calculate the timing for the forcing of flower bulbs.


 Last updated: 04-09-2009