Mainspring
WORKS
Watchmaker at bench, examining movement

Johor Bahru · Malaysia

Measured Work on
Watches That Matter

Bench assessments, water resistance restoration and documented calibre overhauls — carried out by a single watchmaker, at a pace the movement deserves.

Request an Estimate View Services
+60 7 361 4802
[email protected]
Written estimates in 3–5 working days

Our Services

Three areas of work, each priced and scoped before anything begins.

Diagnostic assessment of watch movement

Diagnostic Assessment

A bench reading covering rate, amplitude, beat error, water resistance and case integrity. You receive a printed report with measured values and a costed plan — line by line, nothing bundled.

  • Written estimate before any work proceeds
  • Photographs of corrosion or prior repairs
  • Report belongs to you — take it anywhere
  • 3–5 working days turnaround
RM 470 Enquire
Water resistance restoration on dive watch

Water Resistance Restoration

Crown tube replacement, caseback thread cleaning, crystal gasket renewal and dry-pressure verification to the original depth rating. Suited to sports watches that have not been reopened in several seasons.

  • Pre-work vacuum test to find leak paths
  • Full elastomer seal replacement
  • Post-work pressure certificate issued
  • 1–2 weeks bench time
RM 1,450 Enquire
Calibre documentation and overhaul

Calibre Documentation & Overhaul

A full overhaul paired with a technical record for reference-grade or historically notable movements. Aimed at museums, auction consignors and long-term custodians who need the work evidenced as well as done.

  • Macro photography before and after cleaning
  • 14-day rate log across six positions
  • Bound dossier with watchmaker's notes
  • 10–14 weeks, monitored safe storage
RM 4,700 Enquire

Why Mainspring Works

Principles that shape how work is carried out on every piece that comes to the bench.

Written Before Work Begins

Every job carries a written cost breakdown before a single component is touched. No open-ended workshop hours; each line item is stated and agreed upon in advance.

One Watchmaker Throughout

Your piece is handled by one person from intake to handover. There is no handoff between technicians, so the person who opens the movement is the same person who closes it.

Measured Values, Not Impressions

Reports quote the instrument reading — amplitude in degrees, rate in seconds per day, pressure hold in bar. Descriptive terms such as "running well" are not used in place of figures.

Secure Custody

Pieces undergoing long-form work are stored in a monitored safe when not on the bench. Collection by appointment is available for owners who prefer to inspect their piece mid-service.

Parts Provenance Stated

Any replacement component is identified as original manufacturer stock, new old stock, or fabricated in-house. The source is noted in the service record and never left unstated.

Your Report, Your Property

Diagnostic reports are issued to the owner, not held by the workshop. You may take the document to a second opinion or another repairer without any request or delay.

Have a Piece That Needs Attention?

Bring it in for a reading. A diagnostic assessment tells you exactly what the movement shows — no obligation to proceed beyond that point.

Book an Assessment
+60 7 361 4802 [email protected]

Questions from the Counter

Things owners commonly ask before bringing a piece in.

Do I need to commit to a repair before the assessment?
No. The diagnostic assessment produces a written report and a costed plan. You take the document and decide at your own pace. There is no requirement to proceed with any repair work through Mainspring Works.
How long does a standard repair take?
It depends on the scope. A diagnostic assessment takes three to five working days. Water resistance restoration is typically one to two weeks. Long-form calibre documentation and overhaul runs ten to fourteen weeks. Timelines are stated at the outset, not adjusted once work begins.
What happens if spare parts are hard to find?
Parts sourcing is discussed before work starts. Where a component cannot be sourced as original manufacturer stock, the available options — new old stock or in-house fabrication — are presented with their respective costs. You choose, or you decline. Nothing is substituted without your knowledge.
Can I have my piece assessed even if I had it serviced elsewhere recently?
Yes. The diagnostic assessment is written for owners who have received a quote elsewhere and want a second reading. The report documents the current condition with measured values and photographs, regardless of any previous service history.
Is the long-form documentation service only for very expensive watches?
The service is suited to any movement where provenance and condition need to be evidenced — not only high-value pieces. Museum collections, family heirlooms, and auction consignments are all within scope. If you are uncertain whether your piece fits, an intake conversation can establish that.
How is pricing structured?
Each service has a stated starting price. For the diagnostic assessment (RM 470), that is the complete fee. For restoration and overhaul work, the diagnostic report breaks costs into individual line items so you can see exactly what each element contributes to the total before agreeing to proceed.
How do I hand over my piece, and is it insured while in your care?
Pieces are received at the workshop by appointment. An intake script is followed at the counter — you will be asked about the piece's known history, any previous repairs, and the concerns that brought you in. Pieces in long-form service are stored in a monitored safe between bench sessions. For specific insurance queries, please raise them at intake.

Find the Workshop

Suite 5-2, Menara Landmark, Jalan Ngee Heng, 80000 Johor Bahru

Get in Touch

Send an enquiry or call during workshop hours.

Contact Details

Workshop

Suite 5-2, Menara Landmark
Jalan Ngee Heng
80000 Johor Bahru, Malaysia

Workshop Hours

Mon – Fri: 09:00 – 18:00
Sat: 10:00 – 14:00
Sun & Public Holidays: Closed

Current Turnaround Windows

Diagnostic Assessment 3–5 days
Water Resistance 1–2 weeks
Calibre Documentation 10–14 weeks

Send an Enquiry

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