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AM 485

Update

Basic Information

Name	AM 485
Manufacturer	AM
Launch Year	1936
Caliber Family	Description 480...489: H= 4.5mm 490...499: H= 5.5mm 500...509: H= 5.85mm 520...529: H= 3.95mm 540...549: H= 3.45mm Related calibers AM 480, AM 481, AM 482, AM 483, AM 484, AM 485, AM 486, AM 487, AM 488, AM 489, AM 490, AM 491, AM 492, AM 493, AM 494, AM 495, AM 496, AM 497, AM 498, AM 499, AM 500, AM 501, AM 502, AM 503, AM 504, AM 505, AM 506, AM 507, AM 508, AM 509, AM 520, AM 521, AM 522, AM 523, AM 524, AM 525, AM 526, AM 527, AM 528, AM 529, AM 540, AM 541, AM 542, AM 543, AM 544, AM 545, AM 546, AM 547, AM 548, AM 549
Is COSC certified	No

Timegrapher

Beat rate

18,000 bph

Frequency

2.5 Hz

Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.

Technical Details

Lignes Dimensions	17 ‴
Dimensions	38.35 mm
Height	4.5 mm
Further Measures	Mounting Diameter (Dm): 38.2mm
Power Reserve	(not set)
Frequency	18,000 vph
Jewels	15

Complications and Specifications

Shape	Round
Complications	Sub Second
Regulator Type	Pinned Regulator (or Index Regulator)
Movement Type	Manual
Escapement Type	Swiss Lever
Control Type	Balance Wheel
Winding Type	Stem Winding (Crown)
Setting Type	Stem Set (Crown Pull)

Additional Information

Hand Sizes	1.90 x 1.00 / 0.28mm
Hand Count	3
Country Of Manufacture	Switzerland
Notes	Remarks: open face calibre differences not known between 480...489
Signature	ca. 1936: IX, Swiss Made, 15 Jewels - AM logo, Ebauches-SA logo from 1936 (TR in shield) (AM 520, 16.25" , H= 3.95mm)

Compatible Parts

No parts linked yet for this caliber.

Metadata

Created At	Sep 15, 2023
Updated At	Jan 28, 2024, 8:55:34 PM