Digital Calipers for Pinewood Derby Cars

MAXIMUM VELOCITY! ^®

6" Digital Calipers
for Pinewood Derby Cars

You'll find 101 uses for it!

A Digital Caliper is a precision measuring device to easily and accurately measure objects. It is especially useful for measuring round objects such as wheels and axles.

Features

Outside, inside, and step dimensions measured with jaws
Hole/pocket depth measured with depth blade
Can be used to scribe measurements onto pine blocks
Inches / millimeters can be changed at any time
Zero at any point for relative measurements
Off/on button
1.5V battery and instructions included

Technical Specifications

Accuracy: 0.0005 inches or 0.01 millimeters

Making Measurements

Use firm, but not excessive pressure on the thumb wheel to tighten the calipers on the object.
Before measuring, zero the caliper by closing the jaws and pressing the 'ZERO' button.

External Measurement	External Measurement Close the jaws over the object. While applying pressure with the thumb wheel, wiggle the object slightly to ensure that the jaws read the minimum measurement. For higher accuracy, use the thin 'blade' tips of the jaws to make measurements. However, use caution when measuring soft material (such as pinewood derby wheels and wood) with the thin tips as they can cut the material.
Internal Measurement	Internal Measurement Insert the upper jaws into the pocket or hole and open the jaws. While applying pressure with the thumb wheel, wiggle the object slightly to ensure that the jaws read the maximum measurement.
Step Measurement	Step Measurement Place the jaw end of caliper against the upper step and open or close the jaws so that the back jaw engages the lower step. In the photo, the distance from the wheel hub to the outside tread surface is being measured.
Depth Measurement	Depth Measurement Rest the non-jaw end of the caliper on the rim of the hole/pocket. Open the jaws until the depth blade reaches the bottom of the hole/pocket.
Scribing Measurements	Scribing Measurements Open the jaws to the desired width and tighten the lock screw. Scribe the wood by placing one jaw on the side of the wood, and the tip of the other jaw on the wood surface. Avoid undesired scribe marks by touching the side of the block lightly.

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