| 33 / | HD | GEOMETRICAL INSTRUMENTS |
| 501 | DF | GAUGE {61} |
| 666 | DF | .~ With point marker {7} |
| 670 | DF | .~.~ Having marker centering means {4} |
| 673 | ![]() | .~.~.~ Having adjustable workpiece-contacting centering means {2} |
| 674 | DF | .~.~.~.~> Pivoted caliper workpiece-contacting means |
| 675 | DF | .~.~.~.~> Rack and pinion operating workpiece-contacting means |