I wonder if someone would be able to help me

I have the following circuit

This circuit is a thermocouple which is outputs the voltage V8 at 600°C induces a voltage of 45.093mV which is to be amplified to output a voltage of 6Volts. the circuit is tuned to the correct output voltage by potentiometers R4 and R2.

V4 is the reference junction of the thermocouple which is held at 25°C which induces a voltage of 1.495mV.

The tolerance of all resistors in your circuit is ±1% of their normal value. The digital display has a quantitation error of ±10mV. The tolerance of the EMF of the thermal couple is ±0.75% of its table value. Assume all errors are random and uncorrelated.

My question is how do I determine the % error at the output of the amplifier taking into account the above?

I think I need to take the errors of the components, display and thermocouple and add them together like this

Δε/ε = √(ΔVthermocouple/Vthermocouple)+(ΔR/R)+(ΔVDisplay/VDisplay)

But I am not completely sure. If there is anyone who is knowledgeable on error it would be greatly appreciated

Many thanks