Tim Tells Time™
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Bench Timer · PC timegrapher software

Your Weishi microphone,
a full timing lab.

Live timing you can see and hear, logging for days, guided position tests, fault diagnosis, and a report your customers will understand. All from the Weishi 1000 or 1900 microphone stand already on your bench.

Bench Timer live timing screen showing rate +3.3 s/d, amplitude 248°, beat error 0.7 ms at 18,000 bph
Live timing on a Hamilton 16s pocket watch through the Mic Adapter, with the adapter’s GPS calibration applied (top right).
70–360°Amplitude range, with rate and beat error live
3,600–86,400Beats per hour, detected automatically
DaysContinuous logging, with the power reserve found for you
Why it exists

The Weishi microphone is good. The box it plugs into holds it back.

The Weishi stand is solid and swivels through every test position. But the box shows numbers on a small screen and forgets them the moment you look away.

Weishi box on its own

  • Rate, amplitude and beat error on a 4-inch LCD
  • Averaging up to 60 seconds
  • Nothing saved: no history, no long runs
  • No power-reserve test without sitting and watching
  • No report to hand a customer
  • You can’t hear the real escapement or see the shape of the beat

Weishi microphone + Bench Timer

  • The same readings, large and colour-coded, plus a timing trace with an exact rate every 10 seconds
  • Logs for hours or days, and stops by itself when the watch does
  • Guided position tests with horizontal and vertical statistics
  • Diagnose: repeating wheel errors, rate jumps, knocking, poise
  • One-page PDF reports with your shop name, logo and a written summary
  • Listen to the actual escapement through headphones
Live timing

See it, read it, hear it.

TIMING TRACE

The paper tape, with exact numbers

Each beat plotted as it happens, tick and tock in two colours. The rate for every 10-second block is printed across the top, so you never estimate a slope.

BEAT SCOPE

The shape of the beat

The averaged sound of each side of the swing, with unlock and drop marked. A wrong lift angle or a dragging escapement shows at a glance.

LISTEN

The real escapement

Hear the watch itself through headphones, with a hum filter and volume control. Not a synthetic beep.

AUTO BEAT

Recognises the movement

Detects 3,600 to 86,400 bph automatically, or enter any custom rate. Reliable even on low-amplitude watches.

WIDE RANGE

70° to 360° amplitude

Still reads a tired watch below 100°, and every lift angle from 10° to 90°, with a helper for when you don’t know it.

WATCH LIBRARY

Never look up a lift angle twice

Save each calibre with its beat, lift angle and preferred position sequence. Pick it from a list and go.

Long runs

Wind it, start it, walk away.

Long-run screen with rate, amplitude, beat error and gain/loss over 38 hours
A 38-hour run-down: each reading faint, the trend bold. Sample data.

Logs for as long as you like

Rate, amplitude, beat error and total gain/loss, saved every few seconds to a spreadsheet-ready file.

Power reserve, measured for you

Bench Timer notices when the watch stops, ends the run and records how long it went.

Stays accurate overnight

With the Mic Adapter, every reading uses the adapter’s GPS-calibrated clock. With other microphones, Bench Timer re-checks against internet time every 15 minutes. The PC is kept awake while logging.

Positions

Six positions without a notepad.

Position test results for six positions with summary statistics
Sample data.

Your sequence, timed for you

Dial, crown or pendant positions in any order. Bench Timer prompts each one, waits for the balance to settle, then measures.

The numbers that matter

Mean rate, delta across positions, horizontal versus vertical, and amplitude drop, calculated the moment the test ends.

Straight into your records

Saved to file automatically; one click copies the results into Excel or your service records.

Diagnose

Ten minutes of timing, read for faults.

A timegrapher shows what a watch is doing. Diagnose looks for why: patterns in the timing that point to a particular part of the movement, each with its evidence and where to look. You make the call.

Diagnose screen with escape wheel and fourth wheel charts
Hamilton 16s after 10 minutes: small escape-wheel pattern in the normal range, no fourth-wheel error.
WHEELS

Repeating errors

Folds the timing over each turn of the escape and fourth wheels, so a damaged tooth, bent wheel or worn pivot shows as a pattern.

BALANCE

Jumps and knocks

Sudden rate jumps from a sticking or magnetized hairspring, something touching once a swing, and the balance knocking the banking.

ESCAPEMENT

Unequal lift

Compares unlock to drop on tick and tock, pointing at pallet-stone setting when the two sides differ.

POSITIONS

Poise and pivots

Reads the last position test for dial up versus dial down, flat-to-vertical amplitude loss, and poise.

LONG RUNS

Isochronism and drag

Rate against amplitude through a run-down, early amplitude loss from the mainspring, and once-an-hour dips from the hands or motion works.

STABILITY

A number to compare

Allan deviation of the rate: one steadiness figure for before and after a service, or one watch against another.

Customer reports

A report your customer can actually read.

Every position test and long run turns into a one-page PDF with your shop name and logo. Bench Timer writes the summary in plain English from the measurements, so there’s nothing to type.

“From a full wind, the watch ran for 37 hours 54 minutes before stopping. On average it gains about 1 second a day (about 35 seconds a month)…”

Sample positional timing report
Positional timing report. Sample data.
Sample long-run timing report
Long-run timing report. Sample data.
How it compares

Professional features without a professional price.

Weishi 1900 (box)Weishi mic + Bench TimerWitschi Watch Expert (4th gen)
Typical priceAbout $175–230 US; £149.95 UKTo be announcedAbout £4,000 (UK dealer)
Screen4" LCDYour PC monitor7" touch screen
Amplitude range100–360°70–360°70–360°
Beat rates9 presets, 12,000–43,200; others manuallyAuto 3,600–86,400; any custom rate3,600–86,400, auto or manual
Measuring period2–60 s2–300 s live; unlimited logging2 s to 99 h 59 min
Saved history and graphsNoYes: charts, spreadsheet files—
Power-reserve testNoAutomatic—
Position testingMove and read by handGuided sequence with statistics12 positions, detected automatically
Customer reportsNoBranded PDF with written summaryThermal printer (optional)
Hear the escapementNoYes, headphonesYes, built-in loudspeaker
Beat waveformNoYes, beat scope—
Time baseStandard quartz crystal; rate accuracy ±1 s/dMic Adapter: TCXO (±2.5 ppm, about ±0.2 s/d) checked against GPS and corrected at the bench. Other mics: PC clock calibrated to internet time, about ±0.5 s/dTCXO, ±0.025 s/d
Needs a PCNoYes, WindowsNo

— means the feature is not listed in the manufacturer’s data sheet. Sources, October 2026: Weishi 1900 specifications and UK price from Cousins UK; US price range from current US retail listings; Witschi specifications from the Witschi Watch Expert data sheet (2022); Witschi price from a UK dealer listing (Dynagem). Prices vary by dealer and region. The Witschi is an excellent standalone instrument and the benchmark here; Bench Timer is for the watchmaker who already owns a Weishi.

Tested

Checked against established software.

Bench Timer was tested side by side with eTimer on the same Hamilton 4992B, and against recordings of watches with known rate, amplitude and beat error.

265° / 266°Amplitude: Bench Timer vs eTimer, same watch, 46° lift
1.70 / 1.62 msBeat error: Bench Timer vs eTimer
±0.07 s/dLargest rate error across 24 test recordings, 18,000–86,400 bph
Within 3%Amplitude error across the same tests, 75° to 330°
YOU NEED

A Windows PC

Windows 10 or 11. Bench Timer installs as a normal desktop program.

YOU NEED

A Weishi microphone

From a Weishi 1000 or 1900. Same GX16 plug, same pin layout.

YOU NEED

The Bench Timer Mic Adapter

GPS-calibrated and serial-numbered. One USB-C cable to the PC. See the adapter

Bench Timer Mic Adapter · Weishi 1000 / 1900

One cable from your
Weishi mic to your PC.

Unplug your Weishi microphone from its box and plug it into the adapter. One USB-C cable powers the microphone, turns its signal into clean 24-bit digital audio, and keeps time with its own GPS-checked crystal.

Inside the Bench Timer Mic Adapter: green circuit board with RP2040, PCM1808 and crystal, USB-C socket on the left and microphone socket on the right
Inside the adapter: USB-C to the PC on the left, the Weishi microphone socket on the right.
One cableUSB-C to the PC. No power brick, no drivers.
24-bitAudio converter, 48,000 samples per second
GPS-checkedEvery adapter measured against GPS time before it ships
Why an adapter

A timegrapher is only as good as the clock behind it.

Timing software measures a watch against the clock that samples the sound. In a PC sound card that clock is a cheap crystal nobody ever checked, and its error goes straight into every rate you read.

2.15 s/dError measured on a typical USB sound card, from its sample clock alone (25 parts per million off). It shows up on every watch until you calibrate it out.
0.008 s/dHow far the first adapter’s clock was off before correction (90 parts per billion), measured against GPS time. That correction is stored inside the adapter and applied automatically.
How it connects

The stand you already own, on your PC.

Weishi microphoneThe 1000 or 1900 stand you already own. Same GX16 plug.
Mic AdapterPower, convert, timeClean 8 V for the microphone’s preamp, 24-bit conversion, sample clock locked to a calibrated crystal.
PC running Bench TimerAppears as a USB microphone. Bench Timer reads the adapter’s own calibration automatically.

Microphone through a sound card

  • Needs a separate power supply and a hand-wired cable for the microphone
  • Sample clock unknown until you calibrate it yourself, and it drifts with temperature
  • Calibration tied to one PC and one sound card
  • Noise and hum from the PC’s power picked up on the way in

Microphone through the adapter

  • One USB-C cable: power for the microphone and audio to the PC
  • Temperature-compensated crystal, checked against GPS before shipping
  • Calibration travels with the adapter to any PC
  • Filtered, regulated supplies for the microphone and the converter
Inside

Small board, careful parts.

CLOCK

Temperature-compensated crystal

A 12 MHz TCXO drives everything, including the 48 kHz sample rate, so timing accuracy doesn’t depend on the PC.

CALIBRATION

Measured against GPS

Each adapter is measured against a GPS pulse-per-second reference. The correction and serial number are written into the adapter.

AUDIO

24-bit converter

A Texas Instruments PCM1808 converts the microphone signal with far more range than a ticking watch needs, so faint unlock clicks stay clean.

MICROPHONE POWER

8 V, like the Weishi box

The microphone’s built-in preamp gets the same 8 volts the Weishi supplies, through its own filtered regulator.

USB

No drivers

Standard USB audio. Windows sees a microphone named “Tim Tells Time Bench Timer Mic Adapter” and it works straight away.

OTHER SOFTWARE

A standard USB microphone

Works with other timing programs too, which get its accurate sample clock. The stored GPS correction is applied by Bench Timer.

Compatible microphonesWeishi 1000 and 1900 (GX16 3-pin; same pin layout on both)
Connection to PCUSB-C, USB 2.0 audio class; Windows 10 and 11
Sample rate48.000 kHz, generated from the on-board TCXO
Resolution24-bit (TI PCM1808)
Clock12 MHz TCXO, ±2.5 ppm before calibration
Factory calibrationGPS pulse-per-second reference; measured to a few parts per billion (under 0.001 s/d) and stored in the adapter
Microphone supply8.0 V regulated, from USB power
SizeCase about 67 × 35 × 29 mm

Figures from the Rev 1 adapters. Before calibration the crystal is rated ±2.5 ppm (about ±0.2 s/d); room temperature and ageing move it slowly after calibration.

In the box

Plug in and time.

Mic AdapterGPS-checked and serial-numbered, in its case with the Tim Tells Time mark.
USB-C cableEach one tested with the adapter before it goes in the box.
Bench TimerThe PC timing program, with a normal Windows installer.
1

Unplug the microphone

Take the GX16 plug off the back of your Weishi box. Nothing on the Weishi is modified.

2

Plug it into the adapter

Then connect the adapter to your PC with the USB-C cable.

3

Open Bench Timer

It finds the adapter and loads its calibration. Pick your watch and press Start.

The closed Bench Timer Mic Adapter with Tim Tells Time and Bench Timer on the lid
First production run

Be first in line.

Prototypes are calibrated and running on the bench, and the first production run is being planned. Email to reserve an adapter and Bench Timer, and to hear about pricing for early buyers.

Email Tim Tells Time™
Watch service and restoration · Oakland, New Jersey · Facebook: Timtellstime