Geometry
Playing length to the nearest eighth inch, loft and lie per head, sole bounce where it applies, and the reference posture the numbers were taken from.
Detroit Avenue · Ohio City · By appointment
A club should match a document, not a hunch
We write your flight specification first — lengths, lofts, lies, shaft model and raw length, tip work, grip build-up, headweight — then we build to that paper and measure the finished club to prove it landed. The sheet stays on file with your name on it.
17
Years on Detroit Avenue
±0.5°
Loft & lie tolerance we build to
4,100+
Spec sheets written since 2009
0
Brand quotas on the floor
Why we started writing things down
Most bags fail a tape measure before they fail a swing
When a set comes in for a check, we put a gauge on every club before anyone hits a ball. It is routine to find a 7-iron that reads 1.5° flat against its own stamp, a pitching wedge and a gap wedge separated by 9 yards while the next two sit 22 apart, and three grips of three different core sizes on clubs the golfer swears feel identical.
None of that is a swing fault. It is paperwork nobody ever produced. A golfer cannot fix a number they have never been shown, and a builder cannot hit a target that was never written. So we write it, publish it to the golfer, and hold ourselves to it.
That habit came out of the neighbourhood. Detroit Avenue is a street of machine shops and job printers, trades where the drawing comes before the part and the part gets inspected against the drawing. Golf equipment deserves the same order of operations.
| Club | Stamped | Measured | Delta |
|---|---|---|---|
| 6 iron | 30.0° | 31.2° | +1.2 |
| 7 iron | 34.0° | 34.4° | +0.4 |
| 8 iron | 38.0° | 39.6° | +1.6 |
| 9 iron | 42.0° | 42.1° | +0.1 |
| PW | 46.0° | 47.8° | +1.8 |
The deliverable
What lands in your hands at the end
Not a receipt and not a sales sheet. A one-page specification with a serial number, signed by the person who wrote it.
Shaft record
Model, weight class, raw length, butt and tip trim in inches, installed frequency in CPM, and the orientation mark used at assembly.
Hands
Grip model, core diameter, tape wraps under each hand, finished span in sixty-fourths, and whether the taper was flattened for a weak lead hand.
Flight evidence
The launch, spin, descent and carry window that the geometry produced on the day, with the number of strikes each figure was averaged over.
Six benches, six documents
Pick the part of the bag that is costing you strokes
Each club category gets its own spec block and its own verification pass. You can book one, or stack several into a full-bag write-up.
Driver specification
Head model and setting, shaft profile, playing length, and the spin window that keeps your ball in the air on a windy day at the lakefront.
Driver specsIron specification
Head style, set length progression, lie by club, shaft weight, and a distance ladder with no double gaps hiding in the middle.
Iron specsFairway wood specification
Getting a 3 wood that works off the deck instead of only off a tee, with a face height and sole shape suited to Ohio fairway lies.
Fairway wood specsHybrid specification
The slot between your longest comfortable iron and your shortest fairway wood, filled with a head and shaft that match the rest of the set.
Hybrid specsWedge specification
Loft ladder, bounce and grind chosen against the turf you actually play, and a lie angle that survives a season of practice mats.
Wedge specsPutter specification
Length, lie, loft at impact, head mass against green speed, and a grip that does not fight the arc you already have.
Putter specs
Order of operations
Four passes, one afternoon
A session is deliberately sequenced. We do not touch a component until the existing set has been measured and the golfer has seen those numbers.
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Gauge the bag you brought
Every club goes on the loft-lie machine, the scale, the swingweight gauge and the frequency analyser. You watch the readings go onto the sheet.
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Establish the baseline flight
Strikes with your own clubs, captured on the monitor, so later comparisons run against your real starting point rather than a memory of it.
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Change one variable at a time
Length, then lie, then shaft weight, then head. Isolated changes are the only way to know which one actually moved the number.
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Write and sign the specification
Numbers get transcribed, printed, initialled and filed. Build with us or take the page to whoever you like — it is written to be readable by any competent builder.
Who books this floor
Three groups the off-the-rack bin serves worst
Standard men's specs are drawn around a narrow band of height, hand size and clubhead speed. Plenty of golfers sit outside it.
Golfers past sixty
Total weight, shaft weight and loft usually need revisiting before anything else does. Most of the gains here come from subtraction, not from a new head.
On loft and slower speedsGrowing juniors
A child's set is a moving target. We size to the wrist-to-floor measurement, not to a birth year, and re-check as they grow.
Building a first setWomen buying beyond the box set
Grip core, shaft weight and wedge gapping matter far more than the letter printed on the shaft band. We spec each of them separately.
Driver loft and spin“I brought in a set I had played for six years. Four of the nine irons were outside a degree of their stamp and my gap wedge was doing nothing at all. Tom put the whole thing on paper before he suggested buying a single component.”Ray D. Lakewood · iron re-spec
“My daughter had been swinging a cut-down adult 7-iron that weighed more than my own. Bridget measured her, wrote a five-club sheet, and the whole thing cost less than one junior boxed set at the big store.”Karen S. Rocky River · junior sizing
From the notes drawer
Spec Notes
Short pieces on the fitting questions we answer most often at the counter, written for the golfer rather than for the industry.
Slower swings need more loft, not less
Why the driver that suited you at fifty-five is now costing you carry, and how far up the loft ladder to go.
Read itShaft weight beats flex on a junior club
Flex letters on junior shafts mean almost nothing. The grams do the work, and here is how to read them.
Read itWhere a set falls apart below the pitching wedge
Most women's boxed sets stop at a sand wedge with a 12-yard hole in front of it. Fixing that is the cheapest stroke on offer.
Read itBring the bag you already own
The first thing we do is measure what you have. Sometimes the answer is three bends and a regrip, and we will tell you that before anyone talks about buying anything.