supply of ford cup no. b4 (orifice dia 3.970+/-0.015) to check the consistency/viscosity of paints and related products. , ford cup no. b4 (orifice dia 3.970+/-0.015) to check the consistency/viscosity of paints and r elated products. the cup shall be made of brass along with calibration certificate . a suitable standard stan d to hold ford cup no.b4 along with spirit level (preferably circular type) with calibration certificate to spir it level & electronic digital stop watch (1/100 second) with calibration certificate . make: ksc/ erichsen / byk or similar, specification no: is: 101/1988 part i, sec 5 amendment. [ warranty period: 30 months aft er the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]