Operating mechanical and electronic adding machines to tally columns of numbers in a clerical or accounting setting, you produce running totals, reconciliations, and the paper tapes that document the math behind a ledger entry.
A typical day tends to involve long runs of numerical entry punctuated by reconciliation breaks — totaling receipts, footing ledger columns, cross-checking machine output against source documents. The pace rewards a steady touch on the keys and the discipline to verify rather than trust a first total. Throughput and accuracy of tapes produced are how the work gets measured.
The friction lives in catching the single transposed digit that propagates through a batch. A trained operator develops an ear for the rhythm and the eye for the totals that don't feel right. Variance across settings can be sharp: an accounts office handles invoice runs; a retail back office tallies daily receipts; a payroll office runs hours and earnings totals.
The work tends to reward a calm head and high-volume hand fluency — the same posture that suits any high-accuracy clerical desk. Many operators move into broader bookkeeping or billing work over time. The trade-off is that the machinery itself has receded; the underlying skill of accurate numerical processing has shifted into spreadsheet-and-keyboard environments.
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View all Admin & Office roles →Operating mechanical and electronic adding machines to tally columns of numbers in a clerical or accounting setting, you produce running totals, reconciliations, and the paper tapes that document the math behind a ledger entry.
Median pay for an Adding Machine Operator is about $47K nationally, with the field ranging roughly from $36K to $65K depending on experience, employer, and metro (BLS).
Core skills for this role include Reading Comprehension, Mathematics, Monitoring, Time Management, and Critical Thinking.
Most people in this role hold an associate's degree.
Employment in this field is projected to decline about 0.4% through 2034, with roughly 417,500 people working in it today (BLS).
Closely related roles include Accounting Assistant, Securities Clerk, and Account Clerk.
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