1Opens to 400 mm
The legs spread to 400 mm for scribing big circles, dividing lines, drawing arcs and geometry drafting.
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- 16" spring divider caliper with pencil holder
Big circles, equal spacing-12%CODEcapitalone12Harfington 16" spring divider caliper with pencil holder
A spring divider that opens up to 400 mm. Hardened steel points scribe circles and lines in metal, and with a pencil in one leg it draws large circles and arcs on wood or paper. An adjusting nut fine-tunes the spread.
12%$19.8
Price with code · Harfington · as of 2026-10-09Code capitalone12 · 12% off
2Fine-adjust nut
The spring joint and adjusting nut open and close the legs in small steps for precise spacing that does not drift in use.
3Forged steel legs
Forged high-carbon steel legs with hardened points mark the workpiece precisely, and the pencil holder lets you switch to drawing.
Key specs
- Overall length
- 445 mm / 17.5"
- Width
- 18 mm
- Max opening
- 400 mm / 16"
- Material
- Stainless iron, high-carbon steel legs
- Feature
- Pencil holder
Good pick if
- You lay out large circles in wood or metal
- You step off equal hole spacings
Think twice if
- You need a caliper with a numeric readout
FAQ
Is there a promo code?
Yes. Enter capitalone12 at Harfington checkout when buying the Harfington 16" spring divider caliper with pencil holder for 12% off.
Can it take inside measurements?
The page says it transfers inside sizes of round stock or irregular objects. It has no scale, so read the spread with a ruler.
Can I return it?
The product page offers 30-day returns from delivery. Returns are free within the US; elsewhere you pay the return shipping.
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