SB 5.21.14

tasminn akṣe kṛtamūlo dvitīyo ’kṣas turyamānena sammitas taila-yantrākṣavad dhruve kṛtopari-bhāgaḥ.
Synonyms: 
tasmin akṣe — in that axle; kṛta-mūlaḥ — whose base is fixed; dvitīyaḥ — a second; akṣaḥ — axle; turyamānena — by one fourth; sammitaḥ — measured; taila-yantra-akṣa-vat — like the axle of an oil-pressing machine; dhruve — to Dhruvaloka; kṛta — fixed; upari-bhāgaḥ — upper portion.
Translation: 
As in an oil-pressing machine, this first axle is attached to a second axle, which is one-fourth as long [3,937,500 yojanas, or 31,500,000 miles]. The upper end of this second axle is attached to Dhruvaloka by a rope of wind.