The ornamental design for a measuringinstrument, as shown and described.
FIG. 1 is a front view of a measuring instrument showing my design;
FIG. 2 is a left side view thereof;
FIG. 3 is a top view thereof; and,
FIG. 4 is a rear view thereof.
The right side and bottom views of the instrument not shown in the drawings form no part of the claimed design.
The word “Parker” forming part of the claimed design is a registered trademark of Parker Intangibles LLC. The word “Serviceman Plus” forming part of the claimed design is a trademark of Parker Hannifin Mfg. Germ. GmbH & Co. KG.