Starrett 123Z Series Vernier Caliper - Industrial-Grade Measurement You Can Trust Without Batteries
The Starrett 123Z is the benchmark vernier caliper for machinists, quality inspectors, and toolmakers who can't afford a bad measurement. Made in the USA and built to Starrett's exacting standards, this is the tool you reach for when a digital caliper isn't trusted for the job like audits, PPAP documentation, high-stakes inspection work, or any environment where battery failure isn't an option.
Why engineers choose the 123Z over cheaper alternatives:
The dual-vernier design uses half as many bar graduations as conventional single-vernier tools, making readings faster and less prone to misinterpretation under shop conditions. Machine-divided graduations and a satin chrome, no-glare finish mean you can read this confidently under harsh lighting. The tight, smoothly fitted slides hold position without slop, and the long 50-division vernier scales give you the resolution you need - ±0.0005" accuracy across the full range.
This isn't a tool you replace. It's a tool you calibrate and keep for decades.
Built for the Shop Floor, Trusted by the Industry
Starrett has manufactured precision tools in the USA since 1880. The 123Z series reflects that legacy - hardened stainless steel construction, a satin chrome finish that cuts glare under shop lighting, and a rigid beam design that maintains accuracy even at full extension. It measures inside, outside, depth, and step dimensions in a single tool.
Which Size Is Right for Your Application?
| Model |
Best For |
| 123Z-6 (0–6") |
Bench inspection, small component QC, toolroom use |
| 123Z-12 (0–12") |
General machining, mid-size part inspection |
| 123Z-24 (0–24") |
Structural fabrication, weldment inspection |
| 123Z-36 (0–36") |
Large-format manufacturing, heavy equipment components |
| 123Z-48 (0–48") |
Oversized industrial measurement, heavy fabrication |
| 123Z-60 (0–60") |
Shipbuilding, civil infrastructure inspection |
| 123Z-72 (0–72") |
Maximum-range industrial and structural applications |
Not sure which size fits your application? Call us at 617-398-7852 or use the chat below - our team specializes in precision measurement and will point you to the right model in minutes.
Key Features
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Precision vernier scale - accurate, repeatable readings to 0.001"
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Hardened stainless steel construction - built to withstand demanding shop environments
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Satin chrome finish - reduces glare for easier reading under shop lighting
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Rigid beam design - maintains accuracy across the full measuring range
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Measures inside, outside, depth, and step - one tool for multiple measurement needs
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No batteries required - ideal for ESD-sensitive areas, field use, and harsh environments
Specifications
| Model |
Range |
Resolution |
Accuracy |
| 123Z-6 |
0–6" |
0.001" |
±0.001" |
| 123Z-12 |
0–12" |
0.001" |
±0.001" |
| 123Z-24 |
0–24" |
0.001" |
±0.002" |
| 123Z-36 |
0–36" |
0.001" |
±0.003" |
| 123Z-48 |
0–48" |
0.001" |
±0.004" |
| 123Z-60 |
0–60" |
0.001" |
±0.005" |
| 123Z-72 |
0–72" |
0.001" |
±0.006" |
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Material: Hardened stainless steel
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Scale Type: Vernier (inch)
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Finish: Satin chrome
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Measurement Types: Inside, outside, depth, step
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Battery Required: None
Items Included
- Starrett 123Z Vernier Caliper (your selected size)
- Protective storage case
- Starrett catalog & instruction sheet
Starrett 123Z Series Vernier Caliper Catalog
Why Buy From Precision Engineering Supply?
- ✅ Authorized Starrett Dealer - 100% authentic, factory-direct product
- ✅ Ships in 1–2 Business Days - in-stock items leave fast
- ✅ Price Match Guaranteed - find it cheaper at an authorized U.S. dealer and we'll match it
- ✅ Free 30-Day Returns - hassle-free if it's not the right fit
- ✅ Free Shipping - on orders under 70 lbs to the continental USA
- ✅ Expert Technical Support - real engineers available by phone at 617-398-7852
- ✅ Financing Available - split your purchase into installments via Affirm at checkout
Government & Volume Buyers: We are an authorized supplier ready to support federal, state, and local procurement.
CAGE Code: 15F67 | DUNS: 13-715-2209
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