Possible Clues:

• Visual aid in many field demonstrations?
• Cockney's hair dressing publication is an attractive item
• Counter with publication, clear source of attraction?
• Attractor of iron filings
• It has two poles
• Attractive block of metal
• Periodical in London borough that may have its attractions
• Something straight and attractive and perhaps glossy in one's hair
• Attractive 19 ac publication during Roses clash