Vintage 1940\'s & 1950\'s Tattle-Tale TACHOGRAPH CHART Truck & Bus Squealer
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Vintage 1940\'s & 1950\'s Tattle-Tale TACHOGRAPH CHART Truck & Bus Squealer :
$2.50
This sale is forone new old stock Wagner - Sangamo tachograph chart. This chart is from the time period of the 1940\'s and 1950\'s. The charts were used in a device in order to record the speed of the vehicle and also engine speed anytime during the day. The chart also recorded when the vehicle was not in use. Each chart lasted 24 hours. The truck and bus drivers referred to them as \"Squealers\" or tattle-tale charts. One photo shows the original box the charts were sold in. The other photo shows the chart that is being sold in this sale. On each chart is printed copyright 1941.
Vintage 1940\'s & 1950\'s Tattle-Tale TACHOGRAPH CHART Truck & Bus Squealer :
$2.50