Help us to identify these objects. Some of our donations are so unusual that we have no idea of their identity, purpose or operation. Maybe you are familiar with some of the objects or can tell us, from their description, how they work

INFRA RED OR IMAGE INTENSIFIER

This object has a glass section in one part having a small lens with the glass cavity filled with 3 components and a receptor screen. A screened lead of one conductor has a high voltage plug at the end, the other end has another lens. The other piece has a lens at each end and a high voltage socket that does not match the plug on the other item. Both items are 160mm long.

TOOL INSTRUMENT No256 GPO TOOL, 1933

Unknown device used by the GPO.
The cabinet label reads:- Tool instrument No256 Tester for Tools Instrument
No's 183A and 183B INSTRUCTIONS FOR USE.
1. Place the tool to be tested on the stand with the graduations underneath. 2. Fix the special notched extension lever in the tool with the notches uppermost. 3. For testing the Tool Instrument No 183A, place the small weight in each of the 3 notches in turn and adjust the knurled nut on the tool until balance is obtained. The reading on the Tool for the 3 positions of the weight should be 20, 40 and 60 grammes respectively.
4. For testing the Tool Instrument No 183B use the large weight in a similar manner. The readings on the tool for the 3 positions of the weight should be 70, 130 and 299 grammes respectively. ( See Technical Instruction Tools and Transport (Hand Tools) B. 5101.)

A1567

A MEDICAL INSTRUMENT?

The object is about 1 foot (30 cms) long. The tube has space for a number of batteries and has a mechanism at the 'spatula' end presumably for stimulating the spatula in some way.

It looks like the object has a medical purpose, but exactly what?

Bruce Hammond Collection