PA 0116-001

AIR TRACK,SPARK PAPER ROLL,WHITE,180mx20mm WIDE.

 

Unit: EACH

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Spare large roll of white paper used on Air Tracks for spark recording. 20mm wide x180m long.

This white paper is wider than the 'Recording Timer' parper and it lies over the spark paper. As a spark is shot through poth papers to earth, a black dot is erupted to the underside of this white paper, thus forming a set of black dots that relate to velocity.