[modeleng] hand tacho.

Hi,
I have just bought an old-ish hand tachometer. It is a Smiths Industries 
"Venture" ATH6. It came with no instructions so I don't know whether it 
measures ft/sec or ft/min or rpm. Does anyone have any instructions for 
one of these? If so please can you scan and email to me. It looks to be 
around 70's 0r 80's as it has an 01 number for London. Belonged to an 
old engineer who died and his son sold contents of shed. Never been used 
as the unit was still sealed with the factory way seal.

Julian.

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