Britool Torque Wrench

[John Taylor]

Help Please

I have a Britool EVT 1200 Torque Wrench, had it for getting on towards 40 odd years. I lost the small ball bearing at the bottom of the spring, if you have one you will know what I mean. Can anyone tell me what size it should be please. I tried Britool but they seem reluctant to release this trade secret information, just insisting I sent it in for overall and calibration.

Help would be much appreciated..

JohnT