A Precise Roast

Perrysburg, Ohio; February 9, 2025

A vintage micrometer with a coffee bean held in its jaws, shown in profile against a white background. The C-frame body is engraved with a conversion table and three patent dates.
A coffee bean held in the jaws of a micrometer — J. Matthew Buchanan

Metadata

Published
May 27, 2026
Camera Make
Canon
Camera
Canon EOS R5
Lens
RF100mm F2.8 L MACRO IS USM
Focal Length
100mm
Aperture
f/22
Shutter Speed
1/4s
ISO
ISO 100
Captured
February 9, 2025, 4:12 PM
Exposure Program
Manual
Metering Mode
Multi-segment
Flash
No Flash
White Balance
Auto
Creator
J. Matthew Buchanan
Keywords
coffee, invention, metal, numbers, patent, patent mark, patent number, studio, tool, words
City
Perrysburg
State
Ohio
Country
United States
Copyright
Copyright 2026 J. Matt Buchanan; All rights reserved
Rights Usage Terms
All use of this image requires a license from the copyright holder.
Copyright URL
Web Statement of Rights