59 minutes ago, Norm Matthews said:I have three small measuring glasses that I found in antique stores. The smallest one may be little smaller than a shot glass and the other two are not a lot bigger. Each measures have 4 teaspoons equal 1 Tablespoon. Does anyone know if a teaspoon size at some time in the past changed from 4 to 3 or are/do these measurements have some other application?
Search “Australian tablespoon”. Apparently they use a different standard. From Wikipedia
The Australian definition of the tablespoon as a unit of volume is:[11]
1 Australian tablespoon | = 20 ml | ||
≈ 2 /3 fl oz | |||
= 2 dessertspoons, | 1 dessertspoon= | 10 ml each | |
= 4 teaspoons, | 1 teaspoon = | 5 ml each |