PENSBYKSTRAUSS - Beautiful Pens and Various Items New and Vintage
Image 1 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 2 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 3 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 4 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 5 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 6 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 7 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 8 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 9 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 10 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
Image 11 of Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863
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Starrett 104 Speed Indicator, Early 1900 Mechanical RPM Calculating Tool, #863

$39.25
On sale

A manual speed indicator to calculate rpm of a turning shaft or machine. A calibrated outer circle in tenths from 0 to 100 with an inner circle set dial. The old school way of figuring rpms by mathematics.
Two different rubber end sockets, one cone shaped for hollow openings and a round tire shape to press on a pulley.
This tool is in great shape for the age, the box is a bit worn.