ratanahq.world
Watch repair workshop

Three Services

Each Piece Receives the Work It Needs — Clearly Scoped, Carefully Done

We offer three focused services for mechanical watches. Every service begins with a written assessment and ends with a written report and, where appropriate, a photographic record.

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Our Methodology

How We Approach Every Service

All three services follow the same underlying process: receive carefully, assess before touching, confirm scope in writing, work methodically, document throughout, return with a written account. The scope and duration differ. The care does not.

Assess First

Written assessment of condition shared with you before any tool is used. No surprises introduced mid-job.

Work Methodically

Each service follows documented protocols. Ultrasonic cleaning, calibre-matched lubricants, multi-position regulation.

Report on Return

A written report accompanies every piece on return. For heirloom services, photographs are included.


Crown and stem renewal

Service · 01

Crown and Stem Renewal

A short workshop visit for watches with a worn, loose, or stripped crown. The technician removes the crown and stem assembly, inspects the keyless works and the female threads of the case tube, sources a suitable replacement crown matched to the case finish, and refits the assembly with the appropriate gasket. Where the tube itself has worn, a replacement is fitted only with the owner's separate agreement. The piece is returned with a short note describing what was renewed and what was inspected but left as found.

  • Crown matched to case finish and diameter
  • Keyless works inspected; condition noted in writing
  • Appropriate gasket fitted with the crown assembly
  • Written note on return describing findings

Price

฿ 4,600

Timeline

A few working days (subject to parts availability)

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Service · 02

Restoration of Dial and Hands

A careful service for watches where the dial has aged unevenly or the hands have lost their lume or paint. The technician opens the watch under dust-controlled conditions, removes the hands and dial, photographs them at high resolution, and discusses the options with the owner in writing. Restoration may be sympathetic — light cleaning of the dial surface — or more substantive, including refinishing of hands and renewal of luminous material. The work proceeds only after the owner has approved each visible change in writing.

  • High-resolution photography of dial and hands before any treatment
  • Written options (sympathetic or substantive) discussed with owner
  • Each visible change approved in writing before execution
  • Opened in dust-controlled conditions throughout

Price

฿ 11,500

Timeline

Two to four weeks (scope-dependent)

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Watch dial and hand restoration

Heirloom mechanical watch movement

Service · 03

Heirloom Calibre Full Service

A complete service for heirloom mechanical watches, often passed down across two or three generations. The work includes full movement disassembly, ultrasonic cleaning, careful lubrication suited to the calibre's age and design, replacement of out-of-tolerance parts where suitable spares can be located, gasket renewal, optional gentle case refresh referred back to the owner, and final regulation across multiple positions. Most heirloom services take five to eight weeks. A photographic record of each meaningful stage is shared with the owner along with the final written report.

  • Full disassembly and ultrasonic cleaning of movement parts
  • Lubrication chosen for the calibre's age and design
  • Gasket renewal; case refresh discussed separately
  • Multi-position regulation and final 24-hour check
  • Photographic record shared; written report on return

Price

฿ 14,200

Timeline

Five to eight weeks

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Service Comparison

Which Service Fits Your Watch?

If you are unsure, describe your watch and your concern when you contact us — we will suggest the appropriate service after a brief discussion.

Feature / Scope Crown & Stem Dial & Hands Heirloom Service
Written assessment included
Movement disassembly Partial Partial
Ultrasonic cleaning
Calibre-matched lubrication
Gasket renewal
Photographic documentation
Multi-position regulation
Price (THB) ฿ 4,600 ฿ 11,500 ฿ 14,200

Best for · Crown & Stem: a watch with a loose or stripped crown. Dial & Hands: a watch with uneven dial ageing or deteriorated hand paint. Heirloom Service: a mechanical watch passed across generations that has not been serviced in many years.


Standards Across All Services

Protocols That Apply to Every Job

Owner Approval at Each Decision Point

Nothing outside the agreed scope proceeds without a separate written discussion and your approval.

24-Hour Performance Check

All serviced movements are checked for at least 24 hours after regulation before the watch is returned.

Secure Storage During Service

Watches in our care are stored in a secured area of the workshop when not on the bench and identified with a unique service reference throughout.

Written Communication Only

Assessments, options, approvals, and reports are confirmed in writing. There is no reliance on verbal conversation.

Dust-Controlled Work Area

Dials and open movements are handled in a contained area with controlled airflow, reducing particulate risk to sensitive surfaces.

Honest Timeline Communication

We give realistic durations upfront and contact you immediately if anything changes the expected completion date.


Pricing

Clear Prices, Agreed in Advance

Service 01

Crown & Stem Renewal

฿ 4,600 per service
  • Crown matched to case finish
  • Gasket renewal included
  • Keyless works inspection
  • Written note on return
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Service 03

Heirloom Calibre Full Service

฿ 14,200 per service
  • Full disassembly and ultrasonic cleaning
  • Photographic record throughout
  • Multi-position regulation
  • Full written service report
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Not Sure Which Service?

Describe the Watch — We Will Advise

Contact us with a brief description of the piece and what you have noticed. We will suggest the appropriate service in writing before you make any decision.

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