A 100mm long, magnetic needle made from carbon steel with a brass cup-bearing for low-friction pivoting when used with the needle stand, 52-3318. * Length 100mm * Ideal for the study of compasses and magnetic fields * Accurately balanced * Eisco type PH0816C https://elecena.pl/product/27243933/eisco-ph0816c-magnetic-needle-100mm 2024-11-12 https://elecena.pl/product/27243933/eisco-ph0816c-magnetic-needle-100mm 2025-04-07 https://elecena.pl/product/27243933/eisco-ph0816c-magnetic-needle-100mm 2025-05-25 https://elecena.pl/product/27243933/eisco-ph0816c-magnetic-needle-100mm 2025-08-11