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 ...

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 ...

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

An ammeter or current meter is a measuring instrument that measures the magnitude of electric current. ...

A wattmeter is an analogue electrical measuring instrument used to calculate electrical power. This wattmeter was ...

A wattmeter is an analogue electrical measuring instrument used to calculate electrical power. This wattmeter was ...

A wattmeter is an analogue electrical measuring instrument used to calculate electrical power. This wattmeter was ...

AGRIENANUH was oorspronkelijk een van de vele voorstudies die Nick Ervinck maakte voor de sculptuur AGRIEBORZ. ...

The albumin meter was used to test the level of the protein albumin in urine. The ...

The albumin meter was used to test the level of the protein albumin in urine. The ...

Het uitstekende deel bovenaan dit masker was oorspronkelijk gedecoreerd met pluimen. Verder werden rode graantjes ter ...

Antropomorf masker met dwars uitgewerkt kapsel, raffiabaard, en een witte polychromie.