Skip to content

Independent Witness Statement: Physical Measurement Verification

To: Guinness World Records Management Team

Record Title: "The smallest volume (mm³) of a self-contained hardware device capable of executing a fully functional M4 Enigma cipher algorithm."

GWR Application Reference Number: [Insert GWR Application ID]
Applicant Name: [Your Name / Team Name]

1. Witness Details

I, the undersigned, am acting as an independent specialist witness for the Guinness World Records attempt stated above. I confirm that I am independent of the applicant and have no personal or financial interest in the success of this record attempt.

  • Full Name: [Witness Name]
  • Professional Title / Expertise: [e.g., Senior Electrical Engineer / Metrology Expert]
  • Company / Organization: [Witness Company/Institution]
  • Contact Email: [Witness Email]
  • Contact Phone: [Witness Phone Number]

2. Verification of Measurements

On [Date of Measurement], at [Location of Measurement], I personally observed and verified the physical measurement of the hardware device (WaveShare RP2040-Tiny based emulator) submitted for this record.

Measurement Methodology Used:

I confirm that the dimensions were measured using the axis-aligned bounding box method. The measurements explicitly included the main printed circuit board (PCB), all soldered components, connectors, and solder joints, while excluding temporary external jumper wires used solely for I/O.

  • Measurement Instrument Used: Calibrated Digital Calipers
  • Instrument Make/Model: [Insert Caliper Model]
  • Instrument Serial/Calibration No. (if applicable): [Insert Serial Number]

Recorded Dimensions:

I attest that the following dimensions are accurate and were derived from the arithmetic mean of 3 independent measurements taken at the widest, longest, and highest points of the assembled emulator board:

  • Length (L): [Insert Length] mm
  • Width (W): [Insert Width] mm
  • Height (H): [Insert Height] mm
  • Calculated Total Volume (L × W × H): [Insert Volume] mm³

3. Declaration

I declare that the information provided in this statement is true, accurate, and complete to the best of my knowledge. I understand that Guinness World Records may contact me to verify the details of my statement.

Signature: __________

Date: _________