AWF 705 Change in Spring Length Calculator

Country of manufacture: Germany,            Date of manufacture: ____
Overall length: ____ cm,          Width: 4.4 cm,           Weight: 28.7 gms
Materials: cardboard slides and stator, with plastic shell; closed form simplex
Cursor: no cursor
Scales: 6
Front: A turns n [ B wire diameter d, C mid radius r ] [ D Sliding Modulus G, E Torsional Stress kd ] F Suspension f
Back: instructions for use
Condition: C5 (Signs of Normal Use, but badly yellowed plastic shell)
Came with: Nothing
Note: The yellowed shell has been removed for the purposes of scanning.