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Vintage Technology: Bric-a-brac Hobut "Crypton" Voltmeter

(c) Emil Dudek 2011

Size (approx):

Front flange diameter: 14.4cm
Case diameter: 11.9cm
Depth (case, max): 5.1cm, 7.1cm
Weight: 754g

The Only Example on the web!

Specification:

20V DC meter with division every half volt.
Construction: A large metal front flange is chrome plated and protects a clear plastic window which is recessed.  The black thick plastic body has two long screw terminals marked with their polarity.  They contain two nuts and two washed for connecting lugs. A zero-set screw can be accessed from the front or rear.
Manufacturer:: Hobut (Howard Butler Ltd), Walsall, England.
ID Marks:: Ln. M.C. TF. 1968/9 No. QB.454, Crypton logo
Age: Estimate 1969
Comments:

 

Sturdy large voltmeter.  I imagine that this was a specifically commissioned model as part of the Crypton car garage equipment - this being ideal for reading car-type voltages when at a distance from the equipment. Hobut are still making meters after 85 years!  It is built well enough to cope with industrial usage.

I found this in a junk shop for a few pounds as I wanted to build a simple low-voltage bench meter but was shocked at the prices people charge so nabbed this!