This device consists of a brass cylinder with capsule. Above the opening in this capsule is ...

Measurement: Sensory (auditory) perception. Instrument for determining the discrimination threshold of the pitch. Physical description: This device ...

Roll-up school chart with a wooden stick at the top and bottom. The top stick has ...

School chart with a thin cord at the top to hang it up. The school chart ...

The school chart depicts a scale and nine images of different types of food.

Roll-up school chart with a wooden stick at the top and bottom. The top stick has ...

Roll-up school chart with a wooden stick at the top and bottom and a thin blue ...

Roll-up school chart with a wooden stick at the top and bottom and a thin blue ...

School chart with a wooden stick at the top and bottom. The top stick has a ...

Roll-up school chart with a wooden stick at the top and bottom. The top stick has ...

A man is led away by six soldiers.

The school chart shows a barricade with dozens of people including one waving a flag. In ...

School chart with holes at the top to hang it up. A black and white drawing ...

Rubens is in the centre in front of a canvas. Next to him are two children. ...

Ovalen medaillon met een voorstelling van de Annunciatie aan Maria. Een deel van de voorstelling, met ...

Measurement: Instrument for investigating motor fatigue. This is part of the 'Mosso Ergograph' (the 'appareil d'immobilisation') ...

This instrument consists of two red wooden columns with a metal lamella. Mirrors are attached to ...

A 1000-watt lamp can be adjusted in height and width by rotary knobs at the back ...

A wooden viewing box has an opening at the front and top. Inside is an oblique ...

Reliëf in zandsteen, afkomstig van het altaar van Petrus Celestinus onder het doksaal van de kerk ...

Ovalen medaillon met een geschilderde voorstelling van een bakker die voor zijn oven staat, waarin het ...

School chart with a map of the Balkans and the Scandinavian peninsula on the front and ...

Roll-up school chart with a wooden stick at the top and bottom. The top stick has ...

School chart with a thin cord at the top to hang it up. The school chart ...

School chart with a wooden frame and a chart on the back. The school chart shows ...