Perched above the hubbub of trams and pedestrians on Renfield Street, he was hard at work making sure the huge clock gave Glasgow the right time.
The offices, on the corner of Bath and Renfield Streets, opened in 1894 and only closed in 1982. Today, the ground floor corner site is home to a restaurant.
If you still haven't quite got your bearings, that's Sauchiehall Street in the background, with the familiar corner site of the Greaves Sports shop peeking through and the peak of the Pavilion Theatre reaching skywards. The clock blocks what would have been a good view of Lauder's bar.
Even more confusing for younger readers will be the great hulking church on the left of the picture.
Built in 1848, on the site of an old well, Renfield Street United Presbyterian Church served the community until 1965, when it was demolished to make way for British Home Stores.
Incredibly, even the clock in the picture - an Edward's Pulsynetic - was manufactured in Glasgow.
Edwards, a Glasgow, jeweller and watchmaker since 1839, started selling Pulsynetic clocks in 1914.
In 1976 the business was taken over by Mappin & Webb.