Notes from the warehouse floor

Buying guides & notes on industrial equipment.

Short, practical write-ups on sourcing, testing and buying used automation and instrumentation, based on what we see going through our own stock.

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Buying Guides

September 14, 2026

How to Read a PLC Nameplate Before You Buy Used

What the part number, series and firmware markings on a PLC nameplate actually tell you, and why it matters before ordering a used controller.

Instrumentation

September 11, 2026

A practical look at where Endress+Hauser and HUSAR flow instrumentation overlap, and where the differences matter for a process retrofit.

Buying Guides

September 8, 2026

The questions worth asking a seller before you order a used VFD, HMI or instrument: condition, testing, and what “as-is” really means.

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