The ornamental design for a deckplankpositioningmeasurementtool, as shown and described.
FIG. 1 is a top and front perspective view of a deck plank positioning measurement tool showing my new design;
FIG. 2 is a bottom and front perspective view of the deck plank positioning measurement tool;
FIG. 3 is a top plan view of the deck plank positioning measurement tool; and,
FIG. 4 is a front plan view of the deck plank positioning measurement tool.
The broken line showing of instructional writing is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design.