Industrial equipment - Germany - Siemens Halske tuning fork

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Siemens Halske Stimmgabel, a 1950s 125 Hz tuning fork with strobo- scope, in excellent condition, made of stainless steel metal, originating from Munich, Germany, with dimensions 26 cm (L) x 1 cm (W) x 3 cm (H) and weighing 0.3 kg.

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Description from the seller

SIEMENS HALSKE tuning fork 125 Hz with stroboscope

Was used to regulate motors. Period: 1950.
Manufactured: circa 1950, current value 30 euros.
This tuning fork was used to monitor and adjust the motor speed in teletypes and punched tape transmitters. After striking the tuning fork it was held against the rotating speed regulator, which is visible in the upper part of the image. Through the slots, the 'moving' and 'stationary' black-and-white segments became visible. If these segments moved, it indicated that the motor was not turning at the correct speed. With the serrated screw on the right, the speed could be adjusted. Accurate synchronization of the motor was crucial for data transmission.

SIEMENS HALSKE tuning fork 125 Hz with stroboscope

Was used to regulate motors. Period: 1950.
Manufactured: circa 1950, current value 30 euros.
This tuning fork was used to monitor and adjust the motor speed in teletypes and punched tape transmitters. After striking the tuning fork it was held against the rotating speed regulator, which is visible in the upper part of the image. Through the slots, the 'moving' and 'stationary' black-and-white segments became visible. If these segments moved, it indicated that the motor was not turning at the correct speed. With the serrated screw on the right, the speed could be adjusted. Accurate synchronization of the motor was crucial for data transmission.

Details

Era
1900-2000
Weight
0.3 kg
Metal type
Stainless steel
Specific region of origin
München
Title additional information
Siemens Halske tuning fork
Material
Metal
Country of Origin
Germany
Condition
Excellent condition: barely used with minimal signs of wear
Height
3 cm
Width
1 cm
Depth
26 cm
Estimated Period
1950-1960
BelgiumVerified
Private

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