1892 J. A. Ewing Magn. Induction in Iron ii. 40 We may distinguish this as the ‘one-pole’ method, seeing that the deflection of the magnetometer is mainly caused by one of the bar's poles.

1938 A. E. Clayton Performance & Design Direct Current Machines (ed. 2) xii. 267 If the machine is shut down promptly, the commutator will show signs of serious pitting at the segments connected to the faulty coil and also those one-pole pitch distant from it.

1992 S. P. Maran Astron. & Astrophysics Encycl. 263/2 Gravity, which unlike electromagnetism is a one-pole force, relentlessly gathers matter together.

1932 ‘N. Shute’ Lonely Road i. 15 From the set of her one pole mast she might have been a Thames bawley of about fifty tons.

1940 M. Miller Harbor of Sun xxviii. 311 When a fisherman describes the size of a school as ‘one-pole tuna’, ‘two-pole tuna’ and sometimes ‘three-pole tuna’, he is but saying that the size of the tuna in that special school required one, two or three men to a team for hauling in each fish.

2001 Africa News (Nexis) 23 Mar. Frankly, we have no choice..: economic massing to confront the huge fish that get ready to swallow the small ones... It is a matter of ‘to be or not to be’ in the one-pole-world.

2002 Albuquerque (New Mexico) Jrnl. 21 May 1 There is a one-pole limit per angler.