Could anyone kindly comment on the usage of zero article in ...pen in hand as it appears in the following context:
Hunched over his desk, pen in hand, he was the spitting image of his father at work.
Could anyone kindly comment on the usage of zero article in ...pen in hand as it appears in the following context:
Hunched over his desk, pen in hand, he was the spitting image of his father at work.
Just an example that you can drop articles and possessives when they don't achieve much to get a shorter and more impressive phrase. Instead of "a pen in his hand" the author says "pen in hand" without any loss of clarity. I would say a literary device.