[Steam-engine] Gage adjustment

[Ken Hough]

Andy
I can could set your gage.
I set them for 10-25-50-100-150-200-250-300
They will be dead on at those pressures.
However due to liability I can not. You just don't "set the needle"
That's negligence and a disservice to you. They must be dead weight tested 
at those pressures.
Then retested and adjusted till the needle is accurate at all pressures. 
See ebay for dead weight tester. As you've seen in a gage there is a hair 
spring, sector gears and adjustable fulcrum. All these must be in balance 
to work properly. If you see a gage with solder on the tube, use it as a 
paper weight. When I get done with a gage if its 32 lbs on the gage its 
32PSI in the boiler. Theres only one way to do it and that's correctly 
over a range.
Ken H
google instrument testers. Cost is usually 125.00-400.00