Chapter 24: The Regulator

The woman who brought the Vienna regulator came on a Wednesday in December, in the snow, carrying the clock in both arms the way you carry a sleeping child, pressed against her chest, the mahogany case dark with cold and wet with snowflakes, and she stood in the doorway and the bell rang and Henry looked up from the bench where he was repairing David Mercer's Tissot and the woman said, "I need help."

She was in her forties, tall, her hair pulled back, her coat dusted white, and the clock in her arms was tall too, nearly three feet, a wall clock with a long pendulum case and a glass door and a porcelain dial with Roman numerals and an enamel bezel and the particular proportions of a Viennese regulator, which is a clock of great precision and great beauty, the kind of clock that was built in the workshops of Vienna in the nineteenth century by men who believed that timekeeping was not just a function but an art, that accuracy was a form of beauty, that the closer you came to the truth the more beautiful the mechanism became.

"Set it on the counter," Henry said.

She set it on the counter. The mahogany case was warm from her body, from the contact, from the carrying, and Henry could see immediately that this was a fine clock, a serious clock, not a factory product but a workshop product, made by a single maker or a small team, and the case was hand-finished, the joints tight, the wood figured and dark, and through the glass door he could see the movement — brass, polished, the plates engraved with scrollwork that was not decoration but signature, the maker's hand made visible in the metal.

"What's wrong with it?" Henry said.

"It's losing time. It was my husband's — my ex-husband's. He left it when he moved out. He said I could keep it or throw it away. He said those were the options. Keep or throw. As if a clock this beautiful could be thrown away."

"How much time is it losing?"

"I don't know. A lot. Minutes. Every day. I set it by my phone and by the next morning it's behind. Five minutes, ten minutes. It drifts."

Henry opened the glass door. He looked at the movement. He saw the escapement and his breath caught, not dramatically, not audibly, but in the way that a clockmaker's breath catches when he sees a mechanism he has only read about, has only studied in diagrams and textbooks and in the conversations with Alistair that were Alistair's version of university, the evening lectures at the bench when the shop was closed and the clocks were ticking and Alistair would say, "Let me tell you about the deadbeat escapement."

This was a deadbeat escapement. Not the recoil escapement of the grandmother clock, not the lever escapement of the Elgin, not the platform escapement of the anniversary clock — a deadbeat escapement, the escapement invented by George Graham in 1715, the escapement that eliminated the recoil, the backward motion of the escape wheel that occurs in the anchor escapement, the slight retreat that introduces error, that steals time, that makes the clock less accurate than it should be, and Graham had solved this by redesigning the pallet faces, by making them concentric with the pallet arbor instead of angled, so that the escape wheel did not recoil but simply stopped, dead, motionless, waiting for the next tick, and the deadbeat escapement was the standard of precision timekeeping for two hundred years, the escapement used in regulators, in observatory clocks, in the clocks that kept the time by which all other clocks were set.

Henry had never repaired a deadbeat escapement. Alistair had taught him the theory — the geometry, the angles, the relationship between the impulse faces and the locking faces, the way the escape wheel tooth slid down the impulse face without recoil — but Alistair had not had a deadbeat escapement to work on during Henry's six years at the bench, because deadbeat escapements were rare, were found only in fine clocks, in regulators and observatory clocks, and such clocks did not often come to a small shop in Montpelier, came to specialists in Boston or New York or London, came to the men who had dedicated their careers to precision timekeeping, and Henry was not one of those men, was a general clockmaker, a man who repaired what came through the door, and what came through the door was mostly American clocks with recoil escapements and Swiss watches with lever escapements and the occasional cuckoo clock with collapsed bellows.

But this was a deadbeat escapement, and it was on his counter, and the woman was looking at him with the expression of a person who has carried a heavy thing through the snow and wants to put it down and wants to know that the putting down is not the end but the beginning.

"I can repair it," Henry said. He said this before he was certain, said it the way you step onto a bridge before you have tested every plank, with the confidence that comes from training and trust and the knowledge that the training was good and the trust was earned.

"How long?" the woman said.

"A week. Maybe two."

"How much?"

Henry looked at the clock. A Vienna regulator with a deadbeat escapement and — he looked more closely — a mercury pendulum. The pendulum was not a simple bob on a rod but a frame holding two glass cylinders filled with mercury, the silver liquid visible through the glass, and the mercury pendulum was a compensation pendulum, a pendulum that corrected for the effects of temperature on timekeeping, because a steel rod expands when it is heated and contracts when it is cooled and the expansion and contraction change the effective length of the pendulum and the change in length changes the period and the change in period changes the timekeeping, and the mercury pendulum solved this by using the expansion of the mercury to compensate for the expansion of the rod — as the rod lengthened, the mercury rose in its cylinders, raising the center of gravity of the pendulum, effectively shortening it, and the two expansions canceled each other and the clock kept time regardless of the temperature.

"Two hundred dollars," Henry said. He did not know if this was the right price. It was more than he had charged for any of the fourteen repairs, more than the bracket clock, more than the ship's clock, but the Vienna regulator was a more difficult repair, a more demanding mechanism, and the price should reflect the difficulty, should honor the complexity, should say to the customer this is serious work and I will treat it seriously.

"All right," the woman said. She held out her hand. "I'm Claire Matsuda."

Henry shook her hand. He wrote a ticket. Claire Matsuda. Vienna regulator, mahogany case, deadbeat escapement, mercury pendulum. Losing time — approximately 5-10 min/day. December 11, 2026.

He set the ticket in the box. M section. The first M.

---

He began the next morning. He removed the movement from the case, carefully, the way you remove a heart from a body, the way you remove a thing that is both the purpose and the identity of the thing that contains it, and the movement came out and sat on the bench, exposed, and Henry looked at it through the loupe.

The deadbeat escapement was there, at the top of the movement, the pallet fork sitting astride the escape wheel, and the pallets were different from every other pallet he had worked on — the locking faces were circular arcs, concentric with the pallet arbor, and the impulse faces were flat planes that radiated from the arbor, and the geometry was visible, was legible, was the physical expression of George Graham's insight from 1715, the realization that if you made the locking faces concentric the escape wheel would not recoil, would stop dead, would wait without retreating, and the waiting was the precision, the waiting was the accuracy, the waiting was the difference between a regulator and an ordinary clock.

Henry examined the pallets. The locking faces were worn — not dramatically, not the deep concavity of his mother's Ansonia pallet stone, but worn, the surfaces slightly roughened by decades of the escape wheel's teeth pressing against them, and the roughness introduced friction, and the friction consumed energy, and the consumed energy was energy that was not available to the pendulum, and the pendulum received less impulse than it should, and the less impulse meant a smaller arc, and the smaller arc meant a shorter period, and the shorter — no, Henry corrected himself, a shorter period would mean the clock ran fast, not slow, and the clock was losing time, was running slow, which meant the problem was not the pallets, or not only the pallets, was somewhere else, was in a different part of the mechanism.

He sat back. He thought.

The mercury pendulum. He looked at it, still hanging in the case, the two glass cylinders with their silver liquid, and he looked more closely and he saw it — one of the cylinders was cracked, a hairline fracture near the base, and the mercury had leaked, had seeped out through the crack, and the cylinder was half empty, the mercury level low, and the compensation was compromised, the balance between the rod's expansion and the mercury's rise was off, and the clock was affected by temperature in a way it had not been when the cylinders were full, and in the cold — December, the shop not uniformly heated, the nights freezing — the rod had contracted, had shortened, had made the pendulum effectively shorter, and the shorter pendulum meant a shorter period, which meant the clock should run fast, but the clock was running slow, which meant something else was wrong, something in addition to the mercury, and the something else was the pallets, the friction, the energy loss, and the two problems — the leaking mercury and the worn pallets — were working against each other, the mercury making the clock want to run fast and the friction making the clock want to run slow, and the net result was slow, was the clock losing time, was the symptom that Claire Matsuda had described.

Two problems. Henry laid them out in his mind, the way he laid out parts on the cloth, in order, in sequence, in the logical structure that Alistair had taught him — diagnose first, then plan, then execute, and the diagnosis was: worn pallets and cracked mercury cylinder, and the plan was: relap the pallets and repair or replace the cylinder, and the execution would take — he did not know. He had never lapped a deadbeat pallet. He had never handled mercury.

He stood at the bench and looked at the movement and the movement looked back and the movement said nothing because movements do not speak, but the not-speaking was a kind of speaking, was the silence of a mechanism that was waiting for the clockmaker to understand it, to read it, to let it tell him what was wrong, the way Henry let every clock tell him what was wrong, the way Alistair had said was the better way.

Henry thought about Alistair. He thought about the moment six years ago when Alistair had set the grandmother clock in front of him and said, "Tell me what you see," and Henry had seen nothing, had understood nothing, and that was where they began. And now Henry looked at a deadbeat escapement and he saw almost everything — the geometry, the wear, the problem — but not quite everything, not the solution, not the exact technique for lapping the pallets, not the specific method for sealing or replacing a mercury cylinder, and the not-quite-everything was the gap, was the space between Alistair's teaching and Henry's practice, and the gap was the place where Henry would have to teach himself, would have to go beyond what Alistair had given him, would have to extend the chain by a link that Alistair had not forged.

This was new. This was different from the fourteen repairs, where every technique was one that Alistair had taught him, where every tool was one that Alistair had placed in his hand, where every problem was one that Alistair had described in the evening lectures at the bench. This was a problem that Alistair had described in theory but not in practice, a mechanism that Alistair had drawn on paper but not held in his hands, and Henry would have to cross the distance from theory to practice alone, without the voice beside him saying "Steady, boy, steady."

He went to the bookshelf. Behind the counter, on the bottom shelf, where the phone books lived and the stationery and the old catalogs, there was a row of books — Alistair's horological library, a dozen volumes, some in English, some in French, acquired over fifty years, the collected wisdom of the craft — and Henry pulled out the one he needed: Britten's Watch and Clockmaker's Handbook, Dictionary and Guide, the fifteenth edition, 1955, the clockmaker's bible, the book that Alistair had said contained everything you needed to know and most of what you wanted to know and if it wasn't in Britten's it probably wasn't worth knowing.

He opened it to the section on deadbeat escapements. He read the description of the pallet geometry, the locking faces, the impulse faces, the drop, the lift, the angular measurements, and the text was dense and precise and assumed a level of knowledge that Henry had and a level of experience that Henry did not have, and the gap between the two was the gap he needed to close.

He read for an hour. He studied the diagrams. He compared the diagrams to the mechanism on his bench, the theoretical to the actual, the book to the clock, and the correspondence was close but not exact, because no two clockmakers build exactly the same way, because each maker interprets the geometry slightly differently, the way each musician interprets a score slightly differently, and the interpretation is the art, the personal touch, the signature.

He closed the book. He picked up the pallet fork.

The lapping would be similar to the grinding he had done on his mother's Ansonia, but more difficult — the geometry was more complex, the tolerances were tighter, the surfaces were not flat but curved, and the curves had to be precise, had to be concentric with the arbor, had to be mathematically correct — and Henry set up the grinding fixture and positioned the pallet and began.

The work took all morning. The lapping compound — not diamond this time but aluminum oxide, finer, gentler, the compound used for precision work — and the motion was not a figure eight but a circular sweep, following the curvature of the locking face, and Henry could feel the compound working, could feel the surface smoothing under the fixture, the roughness diminishing, the friction reducing, and the feel was the information, was the feedback, was the clock telling him through his hands what the loupe could not show, and he listened to his hands the way he listened to the clocks, patiently, attentively, waiting for the hands to tell him when the surface was right.

After three hours, the locking faces were smooth. He examined them under the loupe — polished, uniform, the circular geometry restored, the concentric arcs precise — and the pallet fork was ready.

The mercury cylinder was the second problem. Henry examined the crack under the loupe. It was a hairline, running vertically from a point near the base to the bottom, and the mercury that had leaked was gone, had pooled somewhere in the case or on the shelf or on whoever's mantel the clock had been sitting on, and the cylinder was half full, perhaps a third full, the level too low for the compensation to work correctly.

He could not repair the glass. He could not seal the crack. He needed a new cylinder, or he needed to find mercury to refill a sealed replacement, and mercury was not a thing you bought at a hardware store, was not a thing you ordered from Merritt's in Maine, was a hazardous material, a regulated substance, a silvery liquid metal that was beautiful and toxic and had been used in clocks for three hundred years and was now used in almost nothing because the toxicity outweighed the beauty, and the replacement of mercury pendulums with modern temperature-compensated alloys was one of the few changes in horology that Henry approved of, because poison should not be part of a clock.

But this clock had a mercury pendulum and the mercury pendulum was part of the clock's identity, part of its design, part of its precision, and replacing it with a modern pendulum would change the clock, would make it a different clock, would be an alteration rather than a repair, and Henry did not alter, did not change, did not improve — he restored, he repaired, he returned the mechanism to what it had been.

He called a scientific supply company in Burlington. They had mercury. Small quantities, in sealed glass ampoules, sold for scientific purposes, available with the proper documentation, which consisted of a form and a signature and the acknowledgment that mercury was toxic and must be handled with care. Henry ordered a single ampoule — enough to fill the cylinder — and while he was at it he ordered a borosilicate glass cylinder from a glassware supplier in Massachusetts, the correct diameter and height, to replace the cracked one.

The parts would take a few days. Henry set the movement aside. He turned to the other repairs on the shelf — the Hamilton pocket watch of Samuel Carr, the travel clock of Karen Loughlin — and the work continued, the daily work, the ordinary work, and the Vienna regulator waited on the bench, its pallet fork lapped, its pendulum disassembled, its mercury insufficient, its precision waiting for the parts that would restore it.

---

At three o'clock Marion came through the door. Two cups. Darjeeling. The ritual.

"You have a new clock," she said, looking at the Vienna regulator's case, standing empty and tall against the wall.

"A Vienna regulator. Deadbeat escapement. Mercury pendulum."

"I don't know what any of that means."

"It means it's a very accurate clock that needs a very precise repair."

"Like your mother's Ansonia."

"More precise than the Ansonia. The Ansonia was a good clock. This is a great clock."

Marion sipped her tea. She looked at the empty case, at the mahogany, at the glass door, at the proportions.

"It's beautiful," she said.

"Yes."

"Your father would have loved it."

"He never had one. He told me about deadbeat escapements but he never had one to work on. He said they were too rare for a shop in Montpelier."

"And yet here one is."

"And yet here one is."

They sat in the quiet. The clocks ticked. The cuckoo called three — three o'clock, the hour of the tea, the hour of the ritual — and the bird emerged and said cu-ckoo three times and retreated and the door closed and the sound faded and the ticking continued.

"Henry," Marion said.

"Yes."

"This is the first time, isn't it."

"The first time what?"

"The first time you're doing something he didn't teach you. Something you have to figure out yourself."

Henry looked at the pallet fork on the bench, at the lapped surfaces, at the work he had done that morning with Britten's book open beside him and no voice saying "Steady, boy." He looked at the empty case of the Vienna regulator, at the mechanism that was his problem and not Alistair's problem, his repair and not Alistair's repair.

"Yes," he said. "The first time."

"How does it feel?"

Henry considered the question. How did it feel to sit at the bench with a problem that his teacher had not solved for him, had not walked him through, had not guided his hands to the answer? How did it feel to be the end of the chain, the last link, the wheel that had no wheel behind it, the escapement that had no escapement regulating it?

"It feels like the first tick," he said. "Like the moment when the balance wheel starts to oscillate and you don't know yet if the watch will run. You've done the work. You've assembled the parts. You've installed the mainspring and engaged the escapement and positioned the balance wheel. And then you push the balance wheel and you wait. And the first tick either comes or it doesn't. And if it comes, it comes from the mechanism, from the work you've done, from the parts you've assembled, and the tick is yours. The tick is your tick."

Marion smiled. She finished her tea. She took her cup and Alistair's cup.

"Your tick," she said. "I like that."

She went through the door. Henry sat at the bench. The clocks ticked around him — the grandmother clock and the carriage clock and the ship's clock and the cuckoo and the schoolhouse regulator and the Elgin and the travel alarm and the new repairs — and the ticking was the sound of the shop, the sound of the work, the sound of the continuity that Henry was extending, and the extension was the point, was the purpose, was the balance wheel oscillating, and the tick was his, the tick was Henry's, and the tick went forward.