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Unspecified / early 20th century

Beam Compass

Beam Compass

The Smithsonian catalogs Beam Compass as beam compass in its Mathematics records.

WHY IT’S INTERESTING

This German silver instrument has steel points. The two trammels, or frames for the pencil and needle points, have thumbscrews on their fronts. These thumbscrews are ridged around the edge and have a circular pattern on their tops. The number 19 is engraved inside each trammel. Smaller thumbscrews attach holders for needle and pencil points. These holders have horizontal scrolling but are not iden

SERENDIPITYA little unexpected
FamiliarWeird

A CLOSER LOOK

The Smithsonian lists the object under Mathematics and dates it early 20th century.

This German silver instrument has steel points. The two trammels, or frames for the pencil and needle points, have thumbscrews on their fronts. These thumbscrews are ridged around the edge and have a circular pattern on their tops. The number 19 is engraved inside each trammel. Smaller thumbscrews attach holders for needle and pencil points. These holders have horizontal scrolling but are not iden

FOLLOW THE EVIDENCE

Smithsonian InstitutionBeam Compass

Original explanation based on the sources above. Images carry their own reuse terms.