Micronta Digital Logic Probe Cat. No 22-303 with LED and Audio Tone Indication

Micronta Digital Logic Probe Radio Shack 22-302.

Tandy Radio Shack Micronta Digital Logic Probe Cat No. 22-303 Vintage LED

2 Elenco Electronics Digital Logic Probes ~ LP-550 & LP-700

Radio Shack Micronta Digital Logic Probe Cat No. 22-303 NEW-Vintage

Micronta Digital Logic Probe Cat. No 22-304 with LED N90

Micronta Digital Logic Probe Cat. No 22-303 with LED and Audio Tone Indication

Vintage Micronta Digital Logic Probe 22-301