Calstan D.C. Tube Checker 222

The Model 222 Tube Checker incorporates the most advanced circuit features for tube analysing. High resistance, leakage and shorts between elements indicated by the neon lamp even as high as 1MΩ. Completely tests American, Philips, Osram and Mullard Valves, including metal Philips, P. & V.
A turn of the switch picks out and tests every element. Additional Features are percentage readings in conjunction with Good-Bad sections on the scale of a large fan Shaped Meter. This tube Checker will test all tubes, both A.C. and Battery Types.

Available in AC and DC versions with the DC version powered from a 6 V battery and high tension supplied from a vibrator unit.

Versions:

• Emporium - £12/5/-
• AC Counter - £11/5/-
• AC Portable - £11/15/-
• DC Counter - £16/16/-
• DC Portable - £17/6/-

1937 Prices above all plus Tax.

In questo link sono elencati 87 modelli, di cui 20 con immagini e 4 con schemi.
Elenco delle radio e altri apparecchi della Slade Radio Pty. Ltd.(Calstan); Sydney, NSW