Watch family · Style & purpose
Doctor's Watches (Duo-Dial / Pulsation Watches)
Partially verifiedWristwatches with a subsidiary sunk seconds dial offset within the main dial (a 'duo-dial' layout) and, in many examples, a pulsations or pulsometer scale enabling a physician to time a patient's pulse directly from the running seconds hand.
How the mechanism works
The mechanism behind these watches — how it is built, how it developed and its variants — is explained on the Doctor's chronograph page and the related pages below. This page covers what is particular to the watches themselves: identification, terminology and collecting.
Movement & mechanism
- Standard wristwatch movement with the running seconds output displayed on a sunk or recessed subsidiary dial rather than a small dial flush with the main chapter ring
- Pulsations scale printed on the dial, calibrated for a set number of pulse beats, allowing elapsed time for that count to be read directly as a beats-per-minute figure without separate calculation
Identification
- Sunk or recessed seconds subdial, offset rather than centred
- Printed pulsations (or 'pulsometer') scale on the dial
- Often a simple, legible dial without other complications, prioritising quick reading
Terminology
- Duo-dial — a dial combining a main chapter ring with a distinct offset subsidiary dial
- Pulsations scale — a dial scale calibrated to convert elapsed time for a fixed pulse count into beats per minute
Known variations
- Duo-dial without pulsations scale
- Duo-dial with pulsations scale
- Doctor's watch with additional respirations scale
Pocket-watch ancestry
Pulsations and duo-dial layouts were established on pocket watches, including pocket chronographs used clinically, before being adapted to the wrist; the underlying idea of a dial scale that converts elapsed running time into a rate (pulse or respiration) originates in earlier physicians' pocket-watch and pocket-chronograph practice.
Collecting notes
A specialist professional-use category collected for its distinctive dial format and functional medical association, generally valued on the same basis as other vintage dress and utility watches of comparable quality.
Photographs
Photographs are illustrative examples of the type, not necessarily the exact object described. Verify details against the source file page.
Sources & references
- General literature on pulsation and doctor's watches; comprehensive maker-by-maker documentation is limited.
Where sources disagree, the disagreement is stated rather than resolved silently.