One continuous tape of sufficient length for the height of the tank to be gauged.

Spark and corrosion resistant

Two different versions of this should be used at one time and applied equally.

When new and annually there after is how often this should be verified against a reference standard.

This is how long a tank must be allowed to settle prior to gauging for custody transfer transactions?

Steel or a corrosion resistant material.

6in, 12in, or 18in

The corners tend to give dips or slants causing false readings.

Daily or prior to each use is how often this should be inspected.

This should be done before opening the thief hatch.

Feet, Inches, and fractions of an inch.

Minimum 20oz. Maximum of 2 3/8 lbs.

When free water height exceeds the height of the bar apply the paste to this.

Should not be present in a tape.

This is how the bob tip should touch the datum plate to avoid tipping the bob from a vertical position.

A spring snap-catch or other locking device.

Graduated on one side in inches, with at least 1/8 in. subdivisions.

What should be done after each use?

The nearest 1/4 in. is what this should be recorded as.

After the bob has touched datum plate, this is what you are withdrawing the tape to see?

0.004 in. Squared

Should be conical and of sufficient hardness to prevent damage.

Clarity of color change, Ability to shed oil, Shelf life, Ease of application.

For accuracy, this should be used to record both the opening and closing gauges.

All readings should be documented to the nearest....