Paul Tally made a V-one gauge for the CS 707.
Search for "v-one_707_complete.zip" in the Avsim Library.


Quote:

File Description: This gauge is specifically written for Captain Sim B707-300 and variants. List of features: [New Items/Features] Twenty-Two call-outs sounds integrated into gauge [15 new call-outs]. Take-off V-Speeds calculated for Flaps 14 with temperature and altitude adjustments. [Take-off speed bugs automatically set for: V1, VR, V2]. [Flaps-up maneuvering speed (clean speed) bug set after flaps-up]. Optimum altitude and optimum EPR (EPR calc for M.80) are continually calculated. Gross Weight overage will display in 'red' text. Tooltip indicates overweight value (LB/KG). Take-off trim calculated for current gross weight. Display units can be toggled between LB and KG (default LB). Outside Air Temperature can be toggle between Fahrenheit and Celsius. Resettable fuel use. Resettable flight timer. [Selectable Vref landing configurations, Vref40 (default) or Vref50]. [Approach / landing speed bugs automatically set for: Vref, Vref + 5, Vref + 10]. ZFW, Fuel, CG, Gross Weight and Barometric Pressure MSL (QNH) displayed. ['Barometer Set' call-out occurs when pressing keyboard letter 'B' (V-One gauge must be open)]. [Decision Height adjustment now on Data Card in hidden click-spot located on upper right corner]. [Now installation to a single location will work for all variants].

Quoted from the Avsim library ;)