Details

Red No. 18 - Eleven items regarding 'Speedmeter Testing Set 385081' Meter Scales. These consist of a type letter dated 7/11/1941, handwritten memo referring to above letter, handwritten memo dated Nov. 1948, meter scale crossed out in red, two sales order forms dated 8/3/1948, sales order form dated 4/11/1948, handwritten note titled 'Calibration of Speedmeter Testing Sets' together with attached meter scale and a graph of 'Data used in Recalibration of Speedometer Calibration Curve' dated 1/11/1948.