Jewelry Size Visualizer: user guide

What it is for

The tool displays body piercing jewelry at true physical dimensions across digital screens. Calibrating against a standard physical bank card renders jewelry at true life size regardless of screen pixel density. The software also calculates curved and industrial barbell lengths, balances initial swelling allowances against healed downsized targets, provides a private photo measurement canvas, and prints client fit cards for studio consultations.

Who it is for

This application serves four primary groups:

• Professional body piercers verifying barbell lengths and preparing client consultation records.
• Studio counter staff cross-referencing gauge standards between American Wire Gauge and metric millimetres.
• Piercing clients checking life-size dimensions before purchasing replacement jewelry for healed piercings.
• Studio educators demonstrating anatomical clearances, scaffold geometries, and biocompatible material standards.

How to use it

How to switch languages

The tool is available in eight languages: English (EN), Deutsch (DE), Français (FR), Español (ES), Italiano (IT), Português (PT), Nederlands (NL), and ไทย (TH).

1. Top-bar language selector: Use the <select> dropdown menu in the top sticky utility bar (or in the footer) to choose your preferred language on any device.
2. Quick-switch pills (Desktop & Tablet): Click any of the dedicated language pills (EN, DE, FR, ES, IT, PT, NL) to change the entire application language with a single click. The active language is highlighted in rose gold.
3. Language switcher hover tooltip: Hover over the globe icon () to view the full list of supported languages.
4. Persistent preference: Your selection is automatically saved in local browser storage (localStorage) and will be applied on every return visit.

Calibrating your screen to true 1:1 scale

1. Click Calibrate Screen (85.60 mm Card) in the header.
2. Hold a standard physical bank card (85.60 mm) against your display.
3. Drag Adjust Card Width to Match Physical Card: until widths match.
4. Click Save Calibration (Set True 1:1) to lock the calibrated scale across all visualizers.

Browsing and inspecting jewelry in the 1:1 visualizer

1. Open the 1:1 Visualizer tab in the main navigation.
2. Filter the catalog by category, gauge, material, or body location.
3. Toggle measurement units between mm and in.
4. Click any jewelry card to inspect its wearable length, wire thickness, and ball size at 1:1 scale.
5. Queue items for Size Compare or save them to your Saved Collection.

Calculating curved barbell lengths

1. Open the Curved Barbell tab in the main navigation.
2. Choose a placement under Select Piercing Placement:.
3. Enter your caliper measurement into Measured Tissue Span (Hole to Hole / Depth):.
4. Select Standard Piercing Gauge: and click Calculate Barbell Length.
5. Review Fresh Piercing (Initial Length) and Healed Piercing (Downsized Length).
6. Click Transfer to Printable Fit Card to record sizing.

Sizing industrial barbells and scaffold piercings

1. Open the Industrial Barbell tab in the navigation bar.
2. Enter caliper distance into Cartilage Hole-to-Hole Distance (20–80 mm):.
3. Select your ball diameter under Ball End Diameter: (3 mm, 4 mm, or 5 mm).
4. Review Fresh Industrial (Initial Sizing) and Healed Industrial (Downsized Sizing).
5. Click Transfer to Printable Fit Card to export the industrial specifications.

Testing placement with virtual photo try-on

1. Open the Virtual Try-On tab.
2. Click Choose Photo from Device or Capture Photo / Selfie.
3. Select a jewelry silhouette from the library.
4. Adjust Scale Adjustment:, Rotation:, and Opacity: to position the piece.

Comparing jewelry sizes side-by-side

1. Open the Size Compare tab.
2. Select two to four items from your staging queue or catalog menus.
3. Compare wire thicknesses and wearable lengths side by side at calibrated 1:1 scale.

Consulting the anatomical body piercing guide

1. Open the Body Guide tab.
2. Click an anatomical location such as earlobe, helix, conch, or navel.
3. Review standard starting gauges, initial lengths, downsized targets, and healing times from established professional practice.

Measuring tissue spans from photographs

1. Open the Photo Sizing tab.
2. Upload an image showing the piercing site alongside a physical bank card.
3. Place reference markers across the 85.60 mm card edge.
4. Set measurement markers across the tissue span to calculate millimetres.

Managing your saved jewelry collection

1. Open the Saved Collection tab.
2. Review your saved pieces, specifications, and notes.
3. Export a CSV spreadsheet or print a physical list for studio records.

Generating and printing client fit cards

1. Open the Printable Fit Card tab.
2. Enter Studio / Piercer:, Client Name / Reference:, and Piercing Placement:.
3. Review Jewelry Gauge:, Fresh Jewelry Length (Swelling Allowance):, and Healed Jewelry Length (Downsized Target):.
4. Select Recommended Material: and add Piercer Notes & Instructions:.
5. Click Print Fit Card (Single Page) to print with an 85.60 mm scale check bar.

What it does not do

This tool focuses on dimensional visualization, geometric calculations, and fit card documentation. For adjacent tasks, use these dedicated tools:

• Earlobe stretching schedules and rest periods: use the Ear Stretching Timeline at https://poliinternational.com/ear-stretching-timeline/.
• Step-by-step aftercare routines and saline protocols: use the Aftercare Schedule Generator at https://poliinternational.com/aftercare-schedule-generator/.
• Autoclave chamber pressure and sterilization cycles: use the Autoclave Calculator at https://poliinternational.com/autoclave-calculator/.
• Piercing needle gauge pairing and receiving tubes: use the Needle Selector at https://poliinternational.com/needle-selector/.
• Tattoo stencil scaling and skin elongation: use the Stencil Calculator at https://poliinternational.com/stencil-calculator/.
• Specialized non-body industrial wire standards: use the Gauge Converter at https://poliinternational.com/gauge-converter/.

Where your data lives

All calculations, calibration settings, try-on photographs, and saved items exist entirely within your local browser session. Calibration values and saved items are stored in localStorage. Uploaded photos are processed in local memory and never transmitted to external servers. Clearing your browser cache or site storage permanently removes stored data. When you export a CSV or click Print Fit Card (Single Page), files generate directly from device memory.

Printing and exporting

The fit card and saved collection tools provide physical outputs formatted for studio records. The printable client fit card strips toolbars and backgrounds for ink-friendly printing on A4 or US Letter paper. Each printed fit card includes an 85.60 mm check bar to verify printer scaling. The saved collection view exports active pieces as a structured CSV spreadsheet.

Questions and answers

How do I calibrate my screen to see jewelry at true 1:1 scale?

Click Calibrate Screen (85.60 mm Card) at the top of the app. Hold a standard physical bank card against your screen and drag the slider until outlines match. Once saved, the tool recalculates screen PPI and displays all vector jewelry at true physical size.

Why is initial fresh piercing jewelry longer than healed jewelry?

Initial piercing jewelry requires extra wearable length to accommodate post-procedure swelling without compressing tissue. Once tissue stabilizes and acute swelling subsides, a piercer downsizes to a snug barbell to prevent snagging and migration.

How do I calculate the correct curved barbell length for an eyebrow or navel piercing?

Open the Curved Barbell tab and choose your placement from the menu. Enter your caliper measurement into the tissue span field to calculate both the fresh initial length and healed downsized target.

What size barbell is needed for an industrial scaffold piercing?

Open the Industrial Barbell calculator and enter the caliper distance between piercing marks. The calculator adds ball seat protrusion allowances and healing clearance to recommend commercial barbell lengths for fresh and healed wear.

Does the virtual try-on upload my photo to an external server?

No, the virtual try-on processes your photograph entirely inside your local device browser using client-side JavaScript. The image is never uploaded to Poli International, stored in a database, or transmitted across any network.

Which materials are used for fresh piercings?

Initial jewelry should be a material with documented biocompatibility and a traceable specification: for example implant-grade titanium to ASTM F-136, implant steel to ASTM F-138, solid gold from a supplier who states the alloy, or BioFlex® body jewelry, a PP-R random copolymer. Your piercer chooses the material with you, and should be able to show the document behind it.

How do I transfer calculated sizing directly to a printable client fit card?

In either the Curved Barbell or Industrial Barbell tab, click Transfer to Printable Fit Card. The tool switches to the fit card tab and automatically populates placement, tissue measurement, gauge, initial length, and downsized length fields.

Limits

This tool provides mathematical calculations and graphical reference scales based on standardized geometric models. It cannot assess personal anatomical factors such as tissue thickness, cartilage curvature, vascularity, or piercing angle. All calculations serve as an informational guide during consultation; the professional piercer performing the procedure must make the final determination through in-person physical assessment.

Use the tool

Open the Jewelry Size Visualizer: user guide. Everything runs in your browser; nothing you enter is sent anywhere.