細節
The 'Rally' Average Speed Indicator
Mk IV No. 014, Volts 12 Ratio 18:1 by Brooks & Brierly The Moorlands Mossley Manchster, the laquered box with plastic frontage mounted with brass plates for 'clock', 'fast', 'slow', 'set average' and 'press and turn to reset counter' -- 6½ x 9in. (16.5 x 23cm.)
Mk IV No. 014, Volts 12 Ratio 18:1 by Brooks & Brierly The Moorlands Mossley Manchster, the laquered box with plastic frontage mounted with brass plates for 'clock', 'fast', 'slow', 'set average' and 'press and turn to reset counter' -- 6½ x 9in. (16.5 x 23cm.)