# If you need to measure small gaps, the Proto J003L Feeler Gauge is a must-have. The long blade gives you more reach and lets you access difficult areas. Featuring a long 12 in. steel blade, this feeler gauge has a 0.0030 in. thickness for measuring smaller gaps. The 1/2 in. wide blade allows you to work with precision, giving you greater accuracy when using it on components like valves and carburetors. It also comes with an inch dimension type so that it can be used to measure the width of nuts and bolts accurately. The Proto J003L Long Blade Feeler Gauge is an essential tool for all your precision measurement needs

**Manufacturer:** Proto  
**MPN:** `J003L`

The Proto J003L is a long blade feeler gauge with a 0.003-inch blade thickness. It measures 12 inches in length and weighs 0.03 pounds. This precision tool is designed for measuring small gaps and clearances.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Proto |
| Manufacturer name | Proto |
| Manufacturer | Proto, PROTO, Stanley Proto |
| CategoryId | 7099 |
| CategoryIdL1 | 16575 |
| CategoryIdL2 | 10422 |
| CategoryIdL3 | 16577 |
| CategoryIdL4 | 16582 |
| CategoryL1 | Tools & Machining |
| CategoryL2 | Measuring & Marking Tools |
| CategoryL3 | Precision Measuring Tools |
| CategoryL4 | Precision Gauges & Accessories |
| DimensionUnit | inch |
| GTIN | 662679530419 |
| GraingerSku | 3R021 |
| UPC | 662679530419, 94703285215 |
| UnitOfMeasure | EA |
| Weight | 0.01, 0.000625, 0.20000000000000004, 1, 1.0, 1.00 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| height | 0.1 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 12.2 |
| moq | 1 |
| MPN | J003L |
| multiple | 1 |
| qtyInStock | 252 |
| qtyInStockOverride | -2 |
| SKU | G7467372 |
| tierMinQty1 | 1 |
| tierPrice1 | 2.45 |
| url | https://www.zoro.com/proto-feeler-gauge-0003-in-12-in-l-j003l/i/G7467372/ |
| width | 0.8 |
| EAN | 94703285215, 662679530419 |
| Part Number | J003L |
| Product Group | BISS |
| Blade Length (In ) | 12 in |
| Blade Width (In ) | 1/2 |
| Blade Length | 12 in |
| Blade Width | 1/2 in |
| Dimension Type | Inch |
| Item | Feeler Gauge |
| Type | Long Blade, ean, gtin, upc |
| Thickness (In ) | 0.0030 |
| Package Quantity | 1 |
| Finish | Satin |
| Non-Magnetic | No |
| Thickness | 0.0030 in |
| Blade Style | Long Blade |
| Markings | Inch |
| Blade Material | Steel |
| ASIN | B000R8F27Q, B002BYTB08 |
| AdultProduct | False |
| Amount | 28.99, 29.99, 33.99 |
| Asin | B000R8F27Q, B002BYTB08 |
| Autographed | False |
| Batteries_required | False |
| Binding | Tools & Home Improvement |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G7467372 | 2.45 | 1 | 252 | 1 |
| Grainger | 3R021 |  |  | None | 1 |
| Raptor Supplies | AD2KNK | 3.6090405 | 1 | None | 1 |
| AmazonSC | B002BYTB08 | 14.99 | 1 | None | 1 |
| Applied Industrial | 105859243 |  |  | None | 1 |
| National Supply Network | B942867 |  |  | None | 1 |
| Turner Supply | 267953041 |  |  | None | 1 |
| kscdirect.com | BLA J003L |  |  | None | 1 |
| motionindustries.com | 02986266 | 616.81 | 1 | None | 1 |
| stellarindustrial.com | PROTO 003L |  |  | None | 1 |
| directools.com | J003L |  |  | None | 1 |
| grainger.ca | PRT003L |  |  | None | 1 |
| autotoolworld.com | POJ003L | 2.77 | 1 | None | 1 |
| imsbolt.com | J003L | 3.65 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/115000000/115382500/part_--J003L---Proto--a8bcc53433.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp