Antique Mechanical Calculator Function Test Ledger
Build a repeatable observation record for a mechanical adding machine, arithmometer or other hand-operated calculator. Mark only what you actually observe; this ledger does not identify a maker, certify accuracy or invite forceful operation.
Key and register observationsCarriage & clearing notesPrintable reportPrivate browser storage
Object record
Use the machine's wording when possible. Record the source of each identification separately from your own inspection.
Observed function checks
Choose “not tested” unless the action was approved and performed. Do not force stiff keys, turn handles against resistance, or remove covers.
Area
Observation
What happened / evidence
Report preview
Complete the object fields and observations, then build your record.