Shinwa 15-30mm Taper Gauge woodworking rifflers You have the option of

You have the option of different head heights ranging from 1mm to 3/4"

These crank-neck paring chisels have the neck bent at about a 30° angle which offsets the handle and allows the chisel to access hard to reach places where other chisels can't be used

and the tension on the brass knuckle can be adjusted by simply loosening two grub screws and tightening the threaded knuckle cap

countersink

If you add them it may be better to have it done by a machine shop

Shinwa 15-30mm Taper Gauge woodworking rifflers You have the option ofThis taper gauge from Shinwa is a very useful tool for making a variety of measurements including size of dados, holes, pipes, gaps etc, between 15 and 30 mm. It can also be used to quickly set up plunge depths on drill presses and routers. When using the gauge to measure gaps between parallel surfaces the reading is read directly from the gauge and when measuring diameter, a correction is applied using the table on the back of the gauge to compensate