Are there differences in tool standards between aircraft manufacturers? As a follow up to "What is the measurement system used in the aviation industry?" which specified about measurement units during operations, another question that comes to my mind is: are there differences used in tools for maintenance and repairs for aircraft produced in different countries?

Although things have been standardized these days, in the automotive industry you still get differences in the types of tools that are required for repairs. For example, the old British cars such as Land Rover or MG used imperial spanners until not long ago (3/8, 5/16 etc) whereas other cars used more common metric spanners.

Does this apply also to aircraft? An example that comes into my mind would be the Avro RJ series.
According to a friend of mine that has worked as an aircraft mechanic for the last 30 years or so, it depends on the manufacturer.  For example:


American made aircraft, including Boeing, use SAE sized tools (US standard sizes)
Airbus uses metric tools
Hawker uses British Standard Whitworth tools
Dassault Falcon uses (believe it or not) a combination of SAE and metric.
Bombardier uses SAE