VR-355 - Reguladora Electric Master Clock
Master clocks were built in the early 1900's to provide extremely accurate timekeeping for offices, schools, observatories, the military, about anyone who was interested in precise time-keeping. The Reguladora clocks were made in Britain in the 30's and 40's, by the Magneta Company for use in telephone exchanges to time phone calls. Clock 355 is an excellent example, both because of its complexity, as well as the pair of dials that come with it, in that most of these clocks did not have dials.
This clock, with its invar pendulum rod and rather interesting assortment of time outputs, is an excellent example of the master clocks of this period. (Invar is an alloy developed in the last years of the 1800s that has a very low coefficient of expansion, allowing for minimal changes in time-keeping with changes in temperature.)
With its attractive solid oak case (in very nice condition), locking door (which comes with key and works very smoothly), wavy old glass, and pair of dials, one porcelain (in excellent condition) the other plexiglass, which is also in great condition, and allows you to see the mechanism while it operates. This clock is a 100 series clock with the unusual serial number of 1234.
An interesting, and unusual feature are the different signal outputs: This mechanism will send an electrical pulse to different devices once every second, every six seconds, every 30 seconds, every 60 minutes, and a variable impulse that is controlled by a wheel with movable pins, which allows for sending a signal at a set time or times every 24 hours.
As can be seen in the pictures, this clock also comes with a power supply wired up for 220 volt service.
This clock is unusual enough that I hope a collector chooses to use it as his shop master clock: I have been very happy with the master clock in my shop - you don’t have to wind them, and they can keep phenomenal time!
Read MoreThis clock, with its invar pendulum rod and rather interesting assortment of time outputs, is an excellent example of the master clocks of this period. (Invar is an alloy developed in the last years of the 1800s that has a very low coefficient of expansion, allowing for minimal changes in time-keeping with changes in temperature.)
With its attractive solid oak case (in very nice condition), locking door (which comes with key and works very smoothly), wavy old glass, and pair of dials, one porcelain (in excellent condition) the other plexiglass, which is also in great condition, and allows you to see the mechanism while it operates. This clock is a 100 series clock with the unusual serial number of 1234.
An interesting, and unusual feature are the different signal outputs: This mechanism will send an electrical pulse to different devices once every second, every six seconds, every 30 seconds, every 60 minutes, and a variable impulse that is controlled by a wheel with movable pins, which allows for sending a signal at a set time or times every 24 hours.
As can be seen in the pictures, this clock also comes with a power supply wired up for 220 volt service.
This clock is unusual enough that I hope a collector chooses to use it as his shop master clock: I have been very happy with the master clock in my shop - you don’t have to wind them, and they can keep phenomenal time!
