1921 GPO No.13 Milliammeter

This lovely little black coated brass meter is a 1921 GPO No.13 Milliammeter; where GPO = General Post Office. It dates to the days of telegraphy and early days of the telephone network.

Extremely well made, this small meter reads 0-50 or 0-500 Milliamperes by turning a screw which mechanically alters the scale with a resounding click.

The meter is in fairly good cosmetic condition with surface marks/ lost of black coating and rust. It has not been tested and is being sold as a collectible for display only.

Approximate Meter Size:

• Base Depth: 8.5 cm 
  
• Base Width: 7.2 cm
• Face Diameter: 6.5 cm

The meter has the following markings:

• REGD 684129 (dates to 1921)
• Milliamperes
• GPO No.13
• TR23/ 234
• Leak Deflection Not To Exceed 

A great little collectible for those of us whom love vintage test meters!

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