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Movement comparison

NH35 vs NH36

adds day; same diameter; same height; same hand holes. Can NH36 replace NH35? Only with changes to the watch or parts.

Sources checked · How we source numbers
Movements to scale: TMI NH35, TMI NH36Dial side and side section at one scale, hand holes enlarged 8:1. A TMI NH35: Ø 27.4, H 5.32, date 3H, crown 3H. B TMI NH36: Ø 27.4, H 5.32, date 3H, crown 3H (vs A: Ø 0 H 0 mm).A Ø 27.4B Ø 27.4A 5.32B 5.32SIDE · HEIGHTS ON ONE BASELINEHAND HOLES · 8:1A hour 1.5 · minute 0.88 · second 0.198B hour 1.5 · minute 0.88 · second 0.198A TMI NH35Ø 27.4 · H 5.32 · date 3H · crown 3HB TMI NH36Ø 27.4 · H 5.32 · date 3H · crown 3Hvs A: Ø 0 H 0 mm
NH35 vs NH36 to one scaleDrawing from data, not a photo · mm

Published figures

Differences are highlighted. Each number links to its source; an empty field says what is missing.

NH35 vs NH36 specification comparison
FigureATMI NH35BTMI NH36
Diameter27.4 mm127.4 mm2
Casing diameter29.36 mm129.36 mm2
Size in lignes12‴312‴3
Height5.32 mm15.32 mm2
Jewels243243
Beat rate21,600 bph321,600 bph3
Power reserveone side only41 h4not published by TMI
Accuracy (maker)one side only−20 to +40 s/day4not published by TMI
Lift angleone side only53°4not published by TMI
Hands and functionsdiffershours, minutes, centre seconds, date3hours, minutes, centre seconds, date, day3
Hacking secondsYes3Yes3
Hand windingYes4Yes4
Date windowdiffers3H4 · 3H, 6H, 9H53H, 6H6
Do not set the date21:00–04:00721:00–04:007
Crown3H43H4
Hand holeshour 1.5 · minute 0.88 · second 0.198 mm5hour 1.5 · minute 0.88 · second 0.198 mm6
Dial feet1:36, 7:335 · 1:36, 7:3351:36, 7:336 · 1:36, 7:336
Dial centre hole2.05 mm52.05 mm6

Can NH36 replace NH35?

The direction matters: this checks a watch built for the first calibre with the second installed. Size alone does not prove that hands, dial, stem and case will fit.

Fits with changes
  • =diameterSame movement diameter: 27.4 mm.
  • =heightSame height: 5.32 mm.
  • =handsSame hand holes (hour 1.5, minute 0.88, second 0.198 mm): the hands carry over.
  • ≠dateNH36 adds a day wheel: a date-only dial hides it, and the crown gets a day-setting step.
  • =dateDate window at 3H on both.
  • =crownCrown at 3H on both.
  • =dial feetDial feet in the same places (1:36, 7:33).

Check the actual case, stem height and parts before ordering. Compare another pair.

Sources

Documents checked · Report a wrong number

  1. 1Time Module Ltd. — Watch Movement Specification and Drawing - Standard Mechanical Movement NH35A · pdf · read
  2. 2Time Module Ltd. — Watch Movement Specification and Drawing - Standard Mechanical Movement NH36A · pdf · read
  3. 3Time Module Ltd. — Product Line-Up - Mechanical (NH0&NH3); NH34/NH35/NH36 product blocks · html · read
  4. 4Time Module Ltd. — Technical Guide & Parts Catalogue, Cal.NH3 Series (NH34A/35A/36A/37A/38A/39A) - Automatic Mechanical · pdf · read
  5. 5Time Module Ltd. — Watch Movement Specification and Drawing - NH35A (drawing pages read: Appearance-1, Hand Fitting, Hand Setting Stem, Dial-1, Dial-2, Hands) · pdf · read
  6. 6Time Module Ltd. — Watch Movement Specification and Drawing - NH36A (drawing pages read: Hand Fitting, Hand Setting Stem, Dial, Hands) · pdf · read
  7. 7Time Module Ltd. — Operation Manual, Cal.NH3 Series (NH34A/35A/36A/37A/38A/39A) · pdf · read