Measuring stick for marking multiple of the same measurements.
Great for woodworking to get repeatable measurements rather than using a rule every time.
There are 3 lengths, 100mm, 155mm and 205mm.
Bill of materials
1 x 1/4-20 x 1" hex head bolt
1 x 1/4" washer
1 x 1/4-20 wing nut
The author hasn't provided the model origin yet.