|Twin gables at side lane sandwiched between Middle Road and Purvis Street. View from Middle Road. Pics: 26 March 2016.|
The knob on top of its gable seems to suggest the wood element, judging from its rounded edge. Take a look at this guide: https://nanyangtemple.wordpress.com/category/2-visiting-guide/ to see what I mean. However, the smaller gable seems to have an mound that's not so pronounced, which would make it symbolical of the metal element.
|View from backlane off Purvis Street.|