# calculagraph

> device which mechanically calculates and prints time between two events

**Wikidata**: [Q596400](https://www.wikidata.org/wiki/Q596400)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Calculagraph)  
**Source**: https://4ort.xyz/entity/calculagraph


## References

1. [Source](https://adirondack.pastperfectonline.com/library/3CE61C30-DAE0-4DBF-A535-944057963064)