The chandlery inventory that survives an audit
A chandlery holds three kinds of stock and each wants a different method. Fast-moving consumables get counted, because the count is small and the turnover is high. Fastenings and fittings get weighed, because nobody is counting eight hundred stainless screws and a calibrated scale is accurate to within a handful. Everything large and slow gets photographed with a date, because the question at audit is not how many but whether it is still there and still saleable. The inventory that fails is always the one that tried to count the screws.