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MS Finger Sizer – US Sizes 1–15 Jewelry Ring Sizing Tool Set

MS Finger Sizer – US Sizes 1–15 Jewelry Ring Sizing Tool Set

$16.99 USD
$16.99 USD
Sale Sold out

Find the perfect ring size every time with this MS Finger Sizer Set. Featuring US sizes 1–15, it's a reliable and easy-to-use tool for accurate jewelry sizing.

Raw Material

Every tool is crafted using quality raw materials to ensure its durability and longevity.

Value Added

Our tools are designed with careful consideration to ensure they deliver exceptional value to you.

Quality Checked

Each tool passes through a meticulous quality inspection procedure.

Well packed

All our tools are carefully packed to ensure they arrive in perfect condition.

Shipping

Free shipping and returns available on all orders!

We ship all US domestic orders within 1-3 business days!

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Trusted by 20,000+ Jewelers
Across the United State
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Ships in 1–3 Days
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Quality Checked
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What Is an MS Finger Sizer?

An MS Finger Sizer is a professional ring-sizer tool used to find a customer's exact finger size before a ring is ever cut, cast, or resized. Instead of estimating, you slide a numbered steel ring onto the finger and read the size straight off it, so there's no gap between what's ordered and what actually fits.

Compared to a single plastic sizing ring or a worn-out shop sample, this set covers the entire US 1–15 range in one kit, including every half size in between. That's 29 individual rings, each stamped with both the US size and the inside diameter in millimeters, so you're never stuck cross-referencing a chart mid-fitting.

If you're looking for a jewelry finger sizer set US jewelers can rely on daily, or you're simply tired of remaking rings that were sized on a guess, a full steel set like this one takes that variable off the table for good.

Buying Guide

Specs, Sizing & What to Order With It

When you're ready to buy, here's what to know so there are no surprises when it arrives.

Included Sizes — US Ring Sizes
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15 - plus all half sizes.

29 total sizing rings, covering the full finger sizer 1–15 US sizes range in half-size steps.

Inside Diameter Range

Approximately 12.4 mm to 23.8 mm, matching each US size so you can cross-check a reading either way, by size number or by millimeter measurement.

Suitable Metal

The sizer measures a finger, not a ring, so it works the same regardless of what metal the finished piece will be made from:

  • Gold, sterling silver, and platinum all size true to standard fit
  • Titanium tends to size true to slightly loose
  • Tungsten sizes true but can't be resized later, so get this reading right the first time
  • Wider bands (8mm+) sit tighter than thin bands at the same marked size — many jewelers size half a size up for wide tungsten or titanium bands, which this set's half-size steps make easy
What to Order Alongside This Set
  • A ring mandrel, to shape and check round rings against the size you just measured
  • A ring stretcher & reducer, for adjusting an existing ring up or down a size
  • A rawhide or nylon mallet, for shaping metal on the mandrel without marring it
  • A ring clamp, to hold a ring steady for setting, engraving, or polishing
  • A digital caliper, for checking bandwidth and stock thickness before resizing

Product Details

Features & Technical Specifications

Features

  • Measures US ring sizes 1–15 in full
  • Half-size increments for finer accuracy
  • 29 individual steel sizing rings included
  • Smooth, polished, knuckle-friendly finish
  • Durable, rust-resistant steel build
  • Size markings engraved on both faces
  • Shows both US size and mm diameter
  • Built for daily professional workshop use

Technical Specifications

Product Name MS Finger Sizer
Material High-quality steel
Ring Sizes US 1–15
Size Increments Half sizes
Number of Rings 29 pieces
Inside Diameter 12.4 mm – 23.8 mm
Surface Finish Smooth, polished
Rust Resistance Yes
Manufactured By Splenor Tools

TECHNIQUE

How Jewelers Use an MS Finger Sizer at the Bench

There's a quick way to take a reading, and there's what working jewelers actually do to make sure it holds up once the ring is finished. Here's both.

01
Start Close to the Estimate
Pick a ring near the size you'd expect and slide it on gently, knuckle first, rather than starting from size 1 and working up.
02
Check the Knuckle Pass
The correct size should pass over the knuckle with slight resistance, not force. If it slides on with no resistance at all, size down.
03
Confirm the Base Fit
Once past the knuckle, the ring should sit snugly at the base of the finger, without pinching or spinning loosely when the hand is relaxed.
04
Test the Half Sizes Either Side
If the fit feels borderline, try the half size up and the half size down and compare both before recording a final number.
05
Record the Engraved Size
Read the US size or inside diameter engraved on the ring and write it down immediately, before moving on to the next customer.

WHY CHOOSE

Why Choose Our MS Finger Sizer

There are cheaper sizing tools out there, mostly plastic, and there are more expensive precision sets. Here's an honest account of where ours sits and why it's the one we'd put on our own bench.

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Solid Steel, Not Plastic
Plastic sizers flex and wear with heat and handling, which quietly throws the reading off. Steel holds its shape through years of daily use.
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Dual Engraving on Every Ring
US size on one face and millimeter diameter on the other, so you're never stuck without a reference regardless of what a supplier asks for.
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29 Rings, Full Range
Every US size from 1 to 15, including half sizes, in one set — no gaps, no separate half-size add-on to track down.
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Rust-Resistant Build
Built to handle sweat, handling, and daily storage on an open bench without corroding or staining.
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Quality Checked Before It Leaves
Every set passes a manual inspection, size markings verified and surface finish checked, before it's packed.
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Free US Shipping, 7 Days Return
We hold stock and ship within 1–3 business days, so you're not waiting weeks for a tool you need this week.

Frequently Asked Questions

Get answers to common questions about our products and services.