The coil is made from see-through plastic and has five rungs. The rungs slant downwards and get shorter from top to bottom.
Inventory number: 2450
Dimensions, in cm: Einführstab: 21,6 x 0,9 x 0,5; Spirale: 2,0 x 2,5 x 0,3
Date: Septembre 1984
Donor: James M. Edmonson