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Made by watchmakers, for watchmakers.

Watches, tools, and parts for watchmakers. Based in Los Angeles since 2025.

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Testing
Colored Gemstone Testers

Colored Gemstone Testers

3 products

Presidium Duo Tester II (PDT II)

Presidium

51-196

Presidium Duo Tester II (PDT II)

$Presidium Refractive Index Meter II$

Presidium

51-937

Presidium Refractive Index Meter II

Presidium Gem Indicator (PGI)

Presidium

51-222

Presidium Gem Indicator (PGI)

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$358$503

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