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Set of Johansson combination gauge blocks used for calibration and checking the accuracy of gauges.

Gauge Blocks

Set of Johansson combination gauge blocks used for calibration and checking the accuracy of gauges.

Roman Standards from the Arch of Constantine.

Roman Standards

Roman Standards from the Arch of Constantine.

Staffs carried by Roman legions to show who they were and what rank in the army they held.

Roman Standards

Staffs carried by Roman legions to show who they were and what rank in the army they held.