Composite - clouds the intent I think
I like all 3 images, but clutter clouds the lesson(s)
Bus Ensemble (saw B&W images like this on AMZN for $70 this morning)
Tape Measure - Training version
Results may vary if 16ths and 32nds required
Stanley tape - adult version
Results vary until fractions mastered.
Vernier Caliper - Home version
Results partially ensured with 1/4, 1/2, and 3/4 clues.
Stainless steel ruler - drafting by hand
Results vary until fractions are mastered (those clues wouldn't help)