Non - North American Tools

[teka-bb]

Hello Dave,

Would you be interested in non North American tools?

[DavePEI]

Hello Dave,

Would you be interested in non North American tools?

Hi Remco:

Of course. Mind you, I know less about non North American tools, but any tool discussion, North American or not is welcome here! Actually, a lot of the early automatic switching equipment in Canada was British Strowger equipment, including the first two automatic exchanges here on P.E.I. They were Type 51 AEI Strowger ordered in 1950 from Britain based on earlier Siemens switches.

Dave

[teka-bb]

Here is a PDF with tools used to service a rotary system made by BTMC (Bell Telephone Manufacturing Company)  Antwerp.

The quality of the PDF isn't super and the text is in Dutch but maybe it will be of interest?

I have a lot of the tools from this PDF in my collection.

[DavePEI]

Here is a PDF with tools used to service a rotary system made by BTMC (Bell Telephone Manufacturing Company)  Antwerp.

The quality of the PDF isn't super and the text is in Dutch but maybe it will be of interest?

I have a lot of the tools from this PDF in my collection.

Hi Remco:

Interesting... Stelbank voor microphonen (bench vise/press for mocrophone?)  A  very interesting document!

Dave

[teka-bb]

I'm wondering if this can be classified as a 'tool' but it is still an interesting piece of equipment:



It was used to measure the humidity in a CO:

"A psychrometer consists of two thermometers, one which is dry and one which is kept moist with distilled water on a sock or wick. The two thermometers are thus called the dry-bulb and the wet-bulb. At temperatures above the freezing point of water, evaporation of water from the wick lowers the temperature, so that the wet-bulb thermometer usually shows a lower temperature than that of the dry-bulb thermometer. When the air temperature is below freezing, however, the wet-bulb is covered with a thin coating of ice and may be warmer than the dry bulb. Relative humidity is computed from the ambient temperature as shown by the dry-bulb thermometer and the difference in temperatures as shown by the wet-bulb and dry-bulb thermometers. Relative humidity can also be determined by locating the intersection of the wet- and dry-bulb temperatures on a psychrometric chart. Psychrometers are commonly used in meteorology, and in the HVAC industry for proper refrigerant charging of residential and commercial air conditioning systems. The sling psychrometer, where the thermometers are attached to a handle or length of rope and spun around in the air for a few minutes, is sometimes used for field measurements, but is being replaced by more convenient electronic sensors. Alternatively a whirling psychrometer uses the same principle, however the two thermometers are fitted into a device that resembles a Ratchet or football rattle."

(source Wikipedia)

[DavePEI]

Sure, its a tool, Remco. I consider anything specifically made to make the serviceman or operator a tool. This would include operator's chairs, clocks and even dialer pens (which reminds me that I don't have my chair or my Tymeter clock on the tool list. It has been years since I saw a sling psychrometer!

Dave