Determine the Model ID of an Eight Day Shelf Movement - Step by Step

Based on NAWCC Bulletin Supplement 19 Eight Day Wood Movement Shelf Clocks - Their Cases, Their Movements, Their Makers by Bryan Rogers and Snowden Taylor
 
Click on the or any value in the row just below the slanted queries.
Number of Possible Matching Model IDs:  [matches are listed when number found <= 15]
XXXXXXXXXXXXXXXXXXXXXX
1. Strike wire arbors centered?
2. Figure 8 hole size and type?
3. Direction of count wheel wire?
4. Escape wheel bridge shape?
5. Countwheel on the left or the right?
6. What size are the access holes?
7. Square hour shaft?
8. Strike wire pivot material?
9. Strike wires rings or cups?
10. Wind arbors rings or cups?
Model ID Maker(s) Known Users More Info Image
  1. Are the strike wire arbors centered with respect to the access holes?
Questions whether the strike wire arbors are centered (approximately) with respect to the centerline of the upper left access holes.

Copyright Cog Counters NAWCC Chapter #194