Kruve Brewler

The Kruve Brewler is an essential precision tool for coffee lovers, baristas, and roasters who want to take the guesswork out of grind size and bean grading. Crafted from durable stainless steel, this multi-functional ruler and sizing guide gives you a reliable, repeatable way to calibrate your grinder, measure green bean sizes, and track consistency in your brews.

Whether you're dialing in an espresso shot or refining a pour-over recipe, the Brewler provides a clear visual reference from fine to coarse grinds in microns, plus green bean sizes in 64ths of an inch. It also includes a convenient conversion chart and a 15 cm metric ruler, making it a practical tool to keep in your coffee station or roastery.

Key Features

Measure grind sizes from 200–1600 microns for consistent brewing
Grade green coffee beans with size markers from 11–20/64"
Built-in 15 cm metric ruler—ideal for sizing tampers, portafilters, or tools
Quick brew conversion chart for common brewing measurements
Perfect for grinder calibration—identify grind range by particle size
Flat, slim design fits easily in a drawer, apron pocket, or barista kit
Made from premium stainless steel for durability and longevity

Specifications

Material: Stainless steel
Grind measurement range: 200–1600 μm (microns)
Green bean size range: 11–20/64"
Ruler length: 15 cm (with metric scale)
Additional feature: Engraved brew conversion reference

NOTE: To use, spread a sample of your grind on a flat surface and align with the Brewler holes to determine the range. Ideal for identifying grind consistency and calibrating burr grinders for optimal extraction.