Rare Vtg Antique Bakelite TSA-10 Towaco Electronics Telegraph Signal Analyzer

Description

Up for auction is a rare vintage antique Bakelite TSA-10 Towaco Electronics Telegraph Signal Analyzer. I guess it's exactly what it says it is. Used to test signal strength of Telegraphs. I'm guess this dates back to the 1920s, giving the fact it's made if bakelite. Towaco Electronics was out of New Jersey. This was the property of Friden Inc. They were makers of one of the first word processing typewriters, which I have one of those in a separate auction. Another very rare item. I've searched the internet high and low and can not find any information about this device.
Please ask me any questions before bidding.