However, on 5 November Jean Restany, head of the Renault design bureau, decided to rebuild the prototype anyway. On 26 January 1937 the rangefinder was received, but it proved, with a width of 160 centimetres, simply too wide for a chassis that itself was no wider than 170 centimetres, though an attempt was made to place it in a wooden dummy turret. On 2 April a commission of artillery officers visited Renault and these suggested to use the smaller standard rangefinder used by machine-gun units that had a base of 125 centimetres. This was built in a steel cupola, that also featured a central pair of binoculars and binocular diascopes at the sides and back, that could be protected by armoured shutters. On 22 June Renault offered to sell this vehicle for the discount price of ₣ 150,000 (mock-up included). On 31 July the Army agreed; the contract was signed on 7 October 1937.