Can I use the Lee 90684 gauge to trim standard 9mm Luger (9x19mm) brass cases?

No, this gauge is strictly designed for 9mm Makarov (9x18mm) brass with a .365-inch bullet diameter. It cannot be used with standard 9mm Luger (9x19mm Parabellum, .355inch) or .380 ACP cases due to differences in case length and pilot diameter.

What additional tools do I need to make this case length gauge functional?

The Lee 90684 kit includes the specific case length gauge and flat-base shell holder, but it requires a Lee Case Trimmer Cutter and Lock Stud to operate manually, or a Lee Zip Trim for rotary preparation. These components are sold separately and must be used together to trim and square your brass.

Do I need to adjust or calibrate the cutting length on this tool?

No calibration is necessary because this is a fixed-length design set to standard factory specifications, trimming brass to approximately 0.703 to 0.713 inches (~18 mm). The pilot pin bottoms out on the internal face of the shell holder, automatically stopping the cut at the correct length without requiring caliper measurements.

Are there any specific Australian electrical or regulatory compliance requirements for this product?

As a purely mechanical reloading accessory made from hardened steel, the Lee 90684 contains no electrical components and does not require 240V compatibility, AU plugs, or SAA/RCM certification. However, handloaders in Australia must ensure their possession of components complies with their specific state or territory firearms licensing categories.

9mm Makarov Case Gauge - Lee Precision 90684

The Lee Precision 90684 Case Length Gauge and Shell Holder is a dedicated, manual brass preparation tool designed specifically for trimming and squaring 9mm Makarov (9x18mm) cartridge cases. Manufactured from hardened steel, the gauge threads directly into a standard Lee Cutter (sold separately) to function simultaneously as a pilot and an automatic length stop. When used alongside the included calibre-specific, flat-base shell holder, the pilot pin extends through the primer flash hole and bottoms out against the shell holder's internal surface, consistently restoring fired brass to factory length without requiring manual calliper measurements.

Key Features

Calibre-Specific Gauge: Features a dedicated pilot sized for the .365" bullet diameter of 9x18mm Makarov cartridge cases.
Automatic Length Indexing: Trims brass to standard factory dimensions (approx. 0.703 to 0.713 inches / ~18 mm) by stopping the cutter precisely when the pin touches the shell holder base.
Included Shell Holder: Comes with a flat-base shell holder designed to thread into the Lee Lock Stud or mount in the Lee Zip Trim and 3-Jaw Chuck for manual or rotary case spinning.
Durable Hardened Steel: Constructed from hardened steel to maintain tight tolerances and resist wear across repeated case-trimming cycles.
Manual Operation: Fully mechanical design requiring no power source or electrical adapters.

Product Specifications

Manufacturer Part Number (MPN): 90684
Material: Hardened steel
Cartridge Compatibility: 9mm Makarov (9x18mm)
Bullet Diameter Compatibility: .365" (9.27 mm)
Target Trim Length: Approx. 0.703 to 0.713 inches (~18 mm)
Tool Compatibility: Lee Cutter and Lock Stud, Lee Zip Trim, Lee Case Conditioning Kits
Package Dimensions: Approx. 129.5 mm × 96.5 mm × 11.4 mm
Package Weight: Approx. 45 to 60 grams

Who is the Lee Precision 90684 Case Length Gauge and Shell Holder for?

Handloaders reloading 9x18mm Makarov pistol ammunition — requires a dedicated .365" diameter pilot and fixed stop to precisely trim 9x18mm Makarov brass back to the standard 0.703 to 0.713 inch length specification after repeated firings.
Shooters seeking budget-friendly manual case preparation tools — provides a fixed-dimension case length gauge and shell holder system that sets cases to ~18 mm without requiring separate dial callipers or micrometre-adjustable trimmer assemblies.

Less suitable for: Reloaders processing other 9mm variants, as the .365" pilot diameter and ~18 mm length stop cannot accommodate standard .355" calibre cases such as 9mm Luger (9x19mm Parabellum), 9x21mm, or .380 ACP (9x17mm); these dimensions require calibre-matched case length gauges or universal multi-calibre lathe-style case trimmers.

SKU	LE102127LP
Model #	90684
Brand	Lee Precision
Shipping Weight	0.2000kg

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Lee Precision 90684 Case Gauge 9mm Makarov Steel

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