Viscosity is an issue in my glazing. My clear glaze needs a thin application to look its best. Too thick and I have pin holing and crawling in the commercial glaze I was using. I have been glazing pots for close on 40 years So i decided to get some help from a hygrometer as above. It is a glass tube with lead shot in the bottom that makes it float upright. On the side it has calibration. It did not help me. I read about it on an American website. I bought the thing on an English website What I didn't know was the scale on the hygrometer is different between each country. I tried to convert one to the other. No way with my maths. I should be able to still use it I thought. Two problems It seemed to sit in the same place no matter how much water was in the glaze and because the glaze was thin it left no mark on the glass of where it got up to. I tried to read it in the bucket. It was too hard. I needed something less high tech So here we are. I had to buy a stopwatch. I bought this one on eBay for $70 second hand It has a Swiss movement so I hope it is reliable. On eBay they range from $5 to $400.
Now follow the captions on the photos by clicking on them. Use the arrows to move from one to the other. The viscosity cup is a lot easier to use. I don't have to stress about breaking it. I don't have to go cross eyed doing the math etc etc
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