It was once explained to me that the uS refuses to switch more for military
reasons than any other.
By having all BSA parts and fittings, the tool used by an adversary would not
properly fit, nor would any so-called standard replacement parts.
As far as Kg as a weight unit, you are correct, it is a mass unit, equivalent
to 2.2 pounds at standard elevation and conditions.
For most important measurements, the mass is more important than the weight (as
in purchasing a gram of Gold).
Torque is still in force-length units such as foot-pounds, ounce-inches,
Newton-meters and so on.
Gary
> On Apr 25, 2016, at 12:09 PM, Paul Littleton <ka5biw@swcp.com> wrote:
>
> Normally, I am a stickler for proper units. But not when someone is asking
> for help. Now to address a few things.
>
> When talking to gear-heads, the terms pounds come up in tire pressure and in
> torque output of the engine. I usually bite my tongue and insert the proper
> units.
>
> As for kg weight. Have a look at cereal packages. And, there are metric
> systems that use kg as a unit of weight. That is just as confusing as
> Americans using pound for a unit of mass and a unit of force. The only saving
> grace is that 1 kg (1 lb) mass weighs 1 kg (1 lb) force on earth, at sea
> level. Still, the introduction of a constant to Newton's famous equation is a
> pain.
>
> Finally, kilocycles per second is still a valid and descriptive unit. It
> isn't in the SI system, but it makes understanding frequency easier.
>
> I would like to see the United States join much of the rest of the world and
> adopt SI. We would crash fewer probes on the surface of Mars that way.
>
> Best Regards,
> Paul
>
> tapped out on an iPad
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