The optical scanners that will be used to count Pima County votes in November’s general election were bought in the 1990s, when the technology was already old. “It’s like flying around in an old DC-7,” said Charles Geoffrion, chairman of the county’s Election Integrity Commission. He was referring to a 1950-60s’ era propeller airplane. The machines are being disassembled, cleaned and tested. Worn-out parts are being replaced with parts the county acquired by tracing the scanner supply chain. The original manufacturer no longer supplies them. Pima County Elections Department Director Brad Nelson hopes to buy new equipment next year, but he anticipates that the current scanners will be adequate for this election.