I don't know what that would be called - except - that on relatively
mover small airplanes the throttle and the propeller control are both
vernier cables with a lock button built into the handle. You can rotate
the knob left or right and the cable moves  in or out accordingly in
very fine movements. For gross adjustments the button in the center is
pushed which releases the lock and then the handle can be pushed or
pulled. I've often considered how that that would be for heat controls
on the Vanagon.

John

On 12/2/2013 1:05 PM, greentabe-vanagon@yahoo.com wrote:
>
>
> Hi All,
>
> I am looking for the correct terminology here:
>
> You know the heater and vent cables?  They are flexible sheathed rods that can both push and pull.  By contrast a sheathed cable like a bike brake cable can only pull - if you push on it it will buckle.
>
> What is the name of either a sheathed rod that can push and pull, or a sheathed cable with a rod on the end, again for both pushing and pulling?
>
> Thanks!
>
> t johnson/90MV
>
> .
>