| Answer | Crossword Clue |
|---|---|
| scales | series of marks at regular intervals for measuring |
| scale | series of marks at regular intervals for measuring |
| scaling | series of marks at regular intervals for measuring |
| scaled | series of marks at regular intervals for measuring |
| packets | A ship traveling at regular intervals between two ports, originally for the conveyance of mail |
| trippet | projection, cam, or the like, for striking some other part at regular intervals |
| trippets | projection, cam, or the like, for striking some other part at regular intervals |
| intervalometer | a device that operates a control (as for a camera shutter) at regular intervals |
| intervalometers | INTERVALOMETER, a device that operates a control (as for a camera shutter) at regular intervals |
