of the indicating material additionally without dripping of indicating material from the needle 104 the production rate is increased by decreasing the time the dispenser 102 needs to wait until it can move to the next location another benefit correlates to the volumetric nature of the dispensing system the amount of indicating material 64 in each indentation 16 is controlled more precisely this results in better performing direct tension indicating washers due to increased consistency and or reduced scatter of the indicated tension across many direct tension indicating washers this allows the tension at which the indicating material is emitted to be closer to the targeted bolt tension without the risk of the indicating material being emitted after the desired bolt tension has been achieved another feature of the dispensing system of fig3 is the use of a heater 108 to control the viscosity of the indicating material in its un cured and un dispensed state in source 100 heater 108 may be positioned inside or outside of source 100 controlling the viscosity of the uncured indicating material allows the dispensing system to use indicating materials that would be impractical to pump or dispense with at the required volumes and tolerances e g microgram controller 106 controls heater 108 to maintain the indicating material in source 100 at a desired temperature to achieve a desired.