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(This shows a condensed form in convenient size for a field notebook.)

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Prom (A) | T. (B)

Max. | Min. | Ave.

Current Survey: City:

Date:

Observer:

Direction of

Drop in millivolts

Calculated current

amperes

cur

Remarks

rent flow

Potential Survey: -
City-

Date:

Observer:

Measurements

Volts
Polarities Reler

to (A)

Time

Dura-
tion

of
Test
Min.

Location

Remarks

Size

Dura

Dist.
bet.

tion
of

Time

and
kind
of

Location

con

tacts

test min.

pipe

feet

Max. .

Min.

Ave.

Max.

Min.

Ave.

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Max.

Min.

Aver.

Potential to Other Pipes, Etc. :

Duration of each test. .minutes
Potential, pipe to rails, volts
Current through temporary bond connection, amperes
Distance between contacts on pipe

.feet
Drop on pipe, millivolts
Current on pipe, amperes
Direction of current flow:-
Simultaneous Drop Measurements for Resistance of Joints.

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