Copper Wire Bare Abacus Providing a wide viewing field

Providing a wide viewing field of Φ20mm with the zoom ratio of 1:4

Or use them for place value activities to reinforce multiple digit numbers

B - Brass bar 8cm + Brass gauge 4x11cm with handle

Ideal for workstations - no need to replenish paper

with a looped copper

Copper Wire Bare Abacus Providing a wide viewing fieldMade of high electrical conductivity copper. Total 12 meters long, enough for home or shop use. Used in professional maintenance of mobile phones, computers, laptops and other precision motherboard. Ideal Replacement for Wire Cable: A copper wire to take place of wire cable. Easy to Weld: Directly welding without scraping isolation layer. Premium Quality: Copper Wire Bare is made of high grade construction all the way through, excellent build quality