Royal Cross
Instant access to 100+ fusee caliber specifications with side-by-side comparison engine – precision reference tool for professional watchmakers
Download Royal CrossLimited Beta Slots – Claim Yours Now
Instant access to 100+ fusee caliber specifications with side-by-side comparison engine – precision reference tool for professional watchmakers
Download Royal CrossUnlock premium caliber libraries instantly – limited redemptions available
All codes require Royal Cross installation on Android 8.0+. Premium features subject to verification. Codes expire October 2026. One redemption per device. Tools intended for professional watchmaking use.
Royal Cross delivers instant access to meticulously documented fusee movement specifications spanning English pocket watch calibers, marine chronometer detent systems, and carriage clock mechanisms. Every entry contains verified measurements for arbor square dimensions, height-to-cross tolerances, and jewel specifications down to 0.01mm precision.
The comparison engine processes two calibers simultaneously, highlighting critical dimensional differences in real-time. Red-coded indicators flag mismatched finger counts, stop positions, and hook orientations – eliminating cross-reference errors during restoration work.
Bench slip documentation captures timestamped work records with integrated wear notation fields. Lock-and-stamp history tracking ensures forensic-level audit trails for every movement serviced, meeting professional certification standards.
Interactive circular representations display finger configurations with color-coded stop positions. Rotate diagrams to identify tip wear patterns and verify finger count accuracy against physical movements.
Compare arbor squares, jewel diameters, and turn counts between any two movements. Difference highlighting isolates compatibility issues instantly – critical for parts sourcing decisions.
Query by movement type, finger count, hook direction, or manufacturer. Search results return in under 200 milliseconds with relevance ranking based on specification overlap.
Create timestamped work records with custom notation fields for tip polish, jewel state, and bushing conditions. Export complete service histories for client delivery or certification archives.
Secure movements against accidental edits with cryptographic stamps. Audit trails log every specification change with user attribution – ensuring data integrity across team workflows.
Browse pre-organized collections of English fusees, marine chronometers, and carriage clock mechanisms. Each category contains type-specific measurement fields optimized for that movement class.
Royal Cross represents three years of collaboration with certified master watchmakers specializing in fusee escapement restoration. The caliber database incorporates measurements verified against original manufacturer documentation and physical movement analysis. Development prioritizes offline functionality for workshop environments without reliable connectivity, ensuring uninterrupted access to critical specification data during time-sensitive repair work.
Android 8.0+ • 42MB install • Offline mode enabled • 30-day trial included
Download Royal Cross NowFree tier includes 50 calibers. Premium unlock grants full database access. Rated for professional use. Contains technical reference material. Ages 18+. Updated October 2026.