[Robin Craig]

The second design is mostly aluminum and is equally complex in design and materials and manufacture.

Firstly it has a meaty hing mechanism instead of several sections.

The fine tuning of height or final adjustment is done by means of a threaded section. However for speed, the nylon type locking collar can be slid out of the way and then that section can be telescoped and then slide the collar back and final threading can take place.

I have pictures of them side by side for comparison and size.

I have to thank Eric Booth for very generously giving these to me knowing I am collecting items snow related. Thanks mate.