General Machine Products 70046 Strand Tensionmeter - Manual (Page 4)

4
The following list shows the various sizes, types
and designations of messenger cables for which
the tools can be calibrated:
To obtain an accurate measurement it is imperative
that the strand to be measured be positively identi-
fied as to its actual diameter and its grade, either
Utilities Grade or Extra-High Strength. Secondly,
the Strand Tensionmeter to be used must have a
current calibration chart with a corresponding se-
rial number which has a calibration for the specific
strand you have identified.
The Tensionmeter measures the force required to
deflect the strand to an out-of-line position and
registers the amount of force required on the inte-
gral dial. The actual strand tension is then deter-
mined by referring to the calibration chart specifi-
cally prepared for and furnished with each Ten-
sionmeter, which converts the dial indicator read-
ing into the actual tension value.
The instrument measures tension in pounds force
to within an accuracy of three percent (± 3%) or ±
150 pounds, whichever is greater.
Inches mm Designation Description
1/4 6.35 6.6M 1 X 7 EHS
5/16 7.94 6M 1 X 7 Utility Grade
5/16 7.94 10M 1 X 7 EHS
3/8 9.52 10M 1 X 7 Utility Grade
7/16 11.11 16M 1 X 7 EHS
7/16 11.11 16M 1 X 7 Utility Grade
Nominal Diameter