Random TRANSPORTATION pictures

[Heel n Toe]

[URY914]

[URY914]

[URY914]

[URY914]

[abisel]

Originally Posted by Por_sha911

Can anyone identify the green and red spheres in the picture? Lets see if we have any Navy folks on board.

[yellowperil]

Lead, port and starboard or brass

[Capt J.D.]

They are known as Kelvins Balls sometimes Flinders Balls which helps a magnetic compass in the correction of heel etc. to enable a calculation of Magnetic North (very short answer)

[abisel]

Originally Posted by Capt J.D.

They are known as Kelvins Balls sometimes Flinders Balls which helps a magnetic compass in the correction of heel etc. to enable a calculation of Magnetic North (very short answer)

WOOHOO! You win a cookie.

I have heard them called the "navigator's balls" and you are never to mess with the navigator's balls.

Much the same technique is used on the magnetic compass in aircraft. Except the magnets are much smaller and adjusted with brass screws and brass screwdrivers when they "swing the compass" on a compass rose somewhere on the airport grounds.

[bugstrider]

[porsche930dude]

[Brian in VA]

[James Brown]

in honor of the 1400th page, i found a Seat 1400, enjoy

[widebody911]

[Por_sha911]

On the tour of the LST 325
Piston (note the key ring for relative size)

Fuel Injectors (note full size SLR camera case for relative size) :

1400 ft/lb torque wrench for engine work:

[rumlyne]

The above mentioned Navigators balls have many slang names.
They are in Fact Quadrantal Spheres. They are only needed on steel
Ships or boats to isolate a magnetic compass from the mag. field of the ship.

[Racerbvd]

[Racerbvd]

[Racerbvd]

[porsche930dude]