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 | |


 
	