4. Measuring, testing, or signalling instruments
  5. Measuring, regulating or indicating instrument, or casing
  6. Geometric

Frederick S. Hansen

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Straight edge level

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
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Wooden roofing tile

Building units and construction elements – Architectural stock material – Panel – tile or applique or floor – wall – roof – etc.
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