If it's to be a one person device, the person needs at least two arms -
one to hold the board, and one to pull the scale. The method should work
fine, especially if a one-time calibration on EHS could be done against
a trusted method.
-Steve K8LX
On 2017-11-23 7:21 AM, Patrick Greenlee wrote:
The scale doesn't go into the 1/2 inch space. The scale can be in the
next county if you have enough line to go between the scale and the
"barbed wire" or the guy. There is a force multiplication when pulling
sideways on a taught line. Using that principle the OP has explained how
to improvise a tension gauge. Using different dimensions would result
in different multiplication ratios.
Patrick NJ5G
On 11/22/2017 10:07 PM, n8de@thepoint.net wrote:
Please explain how you get the fish scale into that 1/2" space?
73
Don
N8DE
Quoting John Fickes <kc0bmf@gmail.com>:
Jeff
First my disclaimer, I've used this method while building barb wire
fence
to test the tension so as to get all the wires close to the same tension
and I don't know why it wouldn't work for what you are doing, BUT I
don't
guarantee.
1 Take a board 42" long
2 Drive 2 nails in the board 40" apart but don't seat the nails,
leave
them up a bit
3 Draw a straight line between the nails
4 Drive another nail 1/2" below the line that you drew and in the
center
of the first 2 nails
5 Rest the cable on the first 2 nails that are 40" apart and using
a set
of fish scales hook the cable and pull the cable till it touches the 3rd
nail and read your fish scales.
6 Take the reading of your fish scales and multiply by 20
So for example if you pull the wire back and when it touches the middle
nail the scales read 10# multiply by 20 = 200#
I've used this method as I said and it works great for fence. Good Luck
73 John W0JW
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