Symbol 5728 from IEC 60417 - Title/Meaning: Shockwave head, movement in the longitudinal direction Function/description: To identify the control or the indicator to move the shockwave head along its longitudinal axis.
Additional information: 
To represent a movement in one direction only, omit the other arrow.
See also symbol 5769
Published in: 3C/1626/RVC,Amendment 1, 2000,3C/422/FDIS,62A/231/CDV
Own work using: iso.org/obp/graphics/grs/308e0cc2-04d5-447e-b80a-134e93e5b889 200.png
Vectorization:  Mrmw