Choosing testing equipment for a five year plan, not a quarter
The cheapest instrument on the quote is rarely the cheapest one to own.
Every equipment quote has a line item that looks like the obvious choice. It is usually the instrument with the lowest price and the shortest lead time. It is also usually the one that gets replaced first.
Total cost of ownership rarely shows up on a purchase order, but it shows up everywhere else. A gauge with a thin parts network might save you six hundred dollars up front and cost you three weeks of downtime the first time a sensor fails and the manufacturer has no regional stock.
When we specify equipment for a client, we ask about the next five years before we ask about the budget for this quarter. How many operators will use it. What conditions it will actually run in, not the conditions in the brochure. Whether calibration and repair support exist in this region or only at a distant service center.
That approach sometimes points to the more expensive instrument on the page. It almost always points to the one that is still running, still accurate, and still supported when the warranty on the cheaper option has already expired.
