Stop getting ripped off by Roman restaurants

hg is probably hectogram, which is 100 grams

I think you're making that up.

It's probably a medical procedure.

A hectogram is an etto.Though I don't think its actually used in that way in English.

"I'd like 3 hectograms of ham and 2 of that salami..."

And yes,the weight by 'etto' is very normal.That is not a scam,just a typical measurement used in Italy.You might as well say that selling things by the pound in the UK is a scam.

Why is selling things by the pound a scam ?
The etto is obviously not the scam, it's the weight. Like I said in a good restaurant the weight will be visible to you so you cannot be overcharged.

Read the OP.

It states clearly that selling fish by the etto is a scam.No mention of the 3kg being only 1kg,until a much later post.

And obviously,selling by the pound is not a scam either.Just a measurement that foreigners are not used to...like the etto.

Hectograms not used in English at all ... "250 grams or a quarter kilo of ham".

We have hectogram (tenth of a kilogram), decilitre (tenth of a litre) and decalitre (10 litres) ... none common in English.

Are pounds not used at all in Australia any more? Only metric weights?

Are pounds not used at all in Australia any more? Only metric weights?

Almost universally metric, with few exceptions.

We bought a new TV the other day - first time ever I think - and I was shocked to discover that TV sizes are all listed in inches (32", 40", 50", etc), with sometimes a tiny metric equivalent printed nearby. Why should this be so?

We use inches for tv screens in Italy too,not centimetres.