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2 measurements Length Ruler Wood. Length: 50 cm, graduated in millimetres and centimetres.

click representing 1 meter. Marked in 2 cm and 10 cm intervals. 1428.00 Measuring wheel 1440.

Equipped with depth gauge and vernier scale for reading to 1/10 mm. 1440.00 Calliper gauge, plastic 14828.

With vernier scale for reading to 1/20 mm, depth gauge and locking system. 1440.

20 Calliper gauge, digital High quality calliper gauge with measuring length 150 mm/ 6 inches. Resolution 0.

2 2 measurements Length Ruler Wood. Length: 50 cm, graduated in millimetres and centimetres. Horizontal reading Ruler Ruler Wood. Length: 1 m, graduated in millimetres and centimetres. Horizontal reading Ruler Measuring wheel The measuring wheel is supplied with a handle, and each rotation is accompanied by a click representing 1 meter. Marked in 2 cm and 10 cm intervals Measuring wheel Calliper gauge, plastic Measuring length 130 mm. Overall length 170 mm. Equipped with depth gauge and vernier scale for reading to 1/10 mm Calliper gauge, plastic Calliper gauge, stainless steel High quality calliper gauge with measuring length 155 mm/ 6 inches. With vernier scale for reading to 1/20 mm, depth gauge and locking system Calliper gauge, stainless steel Calliper gauge, digital High quality calliper gauge with measuring length 150 mm/ 6 inches. Resolution 0.01 mm. Zero button and mm/inches switch. Battery (LR44) included Calliper gauge, digital Micrometer screw gauge Maximum measuring length 25 mm. Precision 0.01 mm. A precision micrometer with specially hardened and ground screw, lock lever and ratchet stop. Supplied in a protective case Micrometer screw gauge

measurements 3 Mass Beam balance with support stand This sensitive beam balance is supplied with a support stand.

diameter weighing pans. For buoyancy experiments, the balance is provided with hooks (for suspending a weight) and a plate (for supporting a beaker).

00 Balance with support stand Digital scale Handy digital scale in slim design with large weighing platform and easy to read LCD display.

00 Digital scale Weighing range 0 to 200 g with 0.1 g accuracy. Automatic power-down. Battery powered. Batteries (3 x 3510.05) included. Stackable. 1028.

3 measurements 3 Mass Beam balance with support stand This sensitive beam balance is supplied with a support stand. It is provided with a knife edge bearing in hardened steel, an adjustment screw for zeroing, a 28 cm indicator needle with scale and detachable 120 mm diameter weighing pans. For buoyancy experiments, the balance is provided with hooks (for suspending a weight) and a plate (for supporting a beaker). The sensitivity of the balance is 50 mg. Height: 35 cm, Depth: 20 cm, Width: 40 cm Balance with support stand Digital scale Handy digital scale in slim design with large weighing platform and easy to read LCD display. Weighing range 0 to 5 kg. Accuracy 1 g. Tara function. Battery powered, uses three AAA cells (included) Digital scale Digital scale Weighing range 0 to 200 g with 0.1 g accuracy. Automatic power-down. Battery powered. Batteries (3 x ) included. Stackable Digital scale Balance weights set Set comprising of 16 weights from 10 mg to 50 g. Supplied in a plastic box. Nickel plated tweezers included Balance weights set Power adapter Optional power adapter for digital scale ( V AC. 50/60 Hz. Euro plug) Power adapter 12 V

4 measurements Specific gravity weight set 6 different materials: Fe, Al, Bi, Zn, wood and cork.

Four of these cylinders have the same diameter. The remaining weights have different volumes and shapes.

05 Specific gravity weight set Specific gravity cubes Dimensions 10 x 10 x 10 mm.

The set comprises six different materials: Al, Fe, Zn, Cu, Pb and wood. Supplied in a plastic box. 1500.

00 Specific gravity cubes 6 different materials each in three different sizes. Delivered in a plastic box. 1500.

4 4 measurements Specific gravity weight set 6 different materials: Fe, Al, Bi, Zn, wood and cork. 3 of the cylinders have the same weight i.e. Al, Bi and Zn (41 g). Four of these cylinders have the same diameter. The remaining weights have different volumes and shapes. The sizes of the weights are easily measured. Supplied in a plastic box Specific gravity weight set Specific gravity cubes Dimensions 10 x 10 x 10 mm. For illustration of the specific gravity of different materials. The set comprises six different materials: Al, Fe, Zn, Cu, Pb and wood. Supplied in a plastic box Specific gravity cubes Specific gravity cubes 6 different materials each in three different sizes. Delivered in a plastic box Specific gravity cubes Specific gravity cylinder Brass cylinder for determining specific gravity and volume measurements. Height 28 mm Specific gravity cylinder Specific gravity cylinders 3 different materials with the same volumes. Al, Cu and brass. Diameter 20 mm, height 31.5 mm. Supplied in a plastic box Specific gravity cylinder

00 but un-calibrated. Volume: 25 ml. 1520.10 Pycnometer, un-calibrated 1520.00 1520.10 1530.90 1530.20 1530.30 1530.10 Areometer A device for finding the specific gravity of liquids. Density range: 0.

5 measurements 5 Pycnometer, calibrated This device is used to measure the density of fluids. Also called a specific gravity bottle. Manufactured of glass with a tightly fitting ground glass stopper with a fine hole in it. Calibrated. Volume: 50 ml Pycnometer, calibrated Pycnometer, un-calibrated A smaller version of but un-calibrated. Volume: 25 ml Pycnometer, un-calibrated Areometer A device for finding the specific gravity of liquids. Density range: g/cm 3. Accuracy g/cm 3. Total length: 300 mm Areometer Areometer Density range: g/cm 3. Accuracy g/cm 3. Total length: 300 mm Areometer Areometer with thermometer For determination of the salt content of seawater. Temperature table supplied. Total length: 265 mm Areometer with thermometer Alcohol meter vol %. Total length: 300 mm Alcohol meter

6 measurements Time Demonstration stopwatch Easy to read from a remote distance.

Supplied with battery. 1495.20 Demonstration stopwatch 1485.

and clearly visible 8 mm digits (1/100 sec: 4 mm).

Functions: start/stop/reset, addition, intermediate times/splits, standard time and date. 1485.

6 6 measurements Time Demonstration stopwatch Easy to read from a remote distance. Quartz clockwork with dials. Range 0-60 seconds 0-60 minutes. Diameter 110 mm. Supplied with battery Demonstration stopwatch Digital stopwatch, Profile One The stopwatch has an LCD-display with a wide viewing angle and clearly visible 8 mm digits (1/100 sec: 4 mm). Functions: start/stop/reset, addition, intermediate times /splits Digital stopwatch, Profile One Digital stopwatch Low cost digital stop watch with LCD display with 5 mm digits. Functions: start/stop/reset, addition, intermediate times/splits, standard time and date Digital stopwatch Stopwatch Seconds scale 0-30 s. Minute scale 0-15 min. Accuracy 1/10 s. Three function buttons for start stop and reset Stopwatch Digital countdown clock LCD digital countdown clock with 35 mm digits. Alarm function Digital countdown clock

measurements 7 Electronic counter Versatile User-friendly Highly accurate This microprocessor controlled eight-digit counter can be used for measurement of time intervals, periods, revolutions per

The counter is provided with a 25 mm high easy-to-read LED display, and a logically arranged control panel making the apparatus highly suitable for demonstration experiments as well as for student

Start/stop terminals for attachment of microphones, photocells, free fall equipment etc. are provided. The counter can be used with a GM sensor (no. 5135.70 or 5135.

7 measurements 7 Electronic counter Versatile User-friendly Highly accurate This microprocessor controlled eight-digit counter can be used for measurement of time intervals, periods, revolutions per second, frequency, pulses etc. Measures time intervals from 0.01 millisecond and frequencies to 2.5 MHz. The counter is provided with a 25 mm high easy-to-read LED display, and a logically arranged control panel making the apparatus highly suitable for demonstration experiments as well as for student lab exercises. An indicator shows the units of measurement, while the display indicates the input terminal being used. Start/stop terminals for attachment of microphones, photocells, free fall equipment etc. are provided. The counter can be used with a GM sensor (no or ) for measurements of radioactivity with selectable gate times. Memory is provided for storing measured values as well as an RS-232 port for connection to a computer. A free PC program (download from is recommended for use with the counter Start / Stop Works as an electronic stopwatch with a time resolution down to 0.01 ms Collision For collision experiments (conservation of momentum). With two photocell units, up to 4 passage times are measured. Acceleration With two photocell units, passage times and also time from photocell to photocell are measured. Period Measures the period of a signal. During pendulum experiments with a photocell unit, the counter can be set to ignore every other passage, thereby obtaining the correct period of oscillation. Frequency Measures frequencies between 0.01 Hz and 2.5 MHz with the following resolution: 0.01 Hz to 1 khz: 0.01 Hz; 1kHz to 10 khz: 0.1 Hz; 10 khz to 2.5 MHz: 1 Hz Count Event counting (typically radioactivity) either with manual start and stop or for pre-determined intervals. Counting can repeat continuously e.g. for determining radioactive half-lives. Possible counting times are 1 s, 10 s, 60 s, 100 s (plus manual start/stop). Max count: General Specifications Time intervals from 0.01 ms to 100 s, resolution 0.01 ms (1 ms for times over 10 s in Collision and Acceleration mode). Dimensions: 405 x 116 x 205 mm. Power supply: 230 VAC, 50 Hz Electronic counter Measurement of pendulum period. Measuring the speed of sound

8 measurements Student timer Time measurements from 0.03 ms to 27 hours Measurement precision 0.

experiments Particularly well suited for experiments like: The free fall Speed of sound Technical specifications: Display: 5 digit LED with floating decimal point Resolution: 0.

60 Student timer Photocell unit The unit is suitable for measuring time intervals e.g. for experiments on an air track, pendulum period, period of rotation, etc.

8 8 measurements Student timer Time measurements from 0.03 ms to 27 hours Measurement precision 0.01 ms Accepts start and stop signals from microphones, photocells or any on/off switch connected to the 4 mm sockets Manually controlled stopwatch option Simple operation excellent for student experiments Particularly well suited for experiments like: The free fall Speed of sound Technical specifications: Display: 5 digit LED with floating decimal point Resolution: 0.01 ms Inputs: DIN 6 pole connectors for photocells and microphones; 4 mm safety jacks for free fall experiment or other equipment Power: 6 ea. AA batteries or mains adapter (incl.) Student timer Photocell unit The unit is suitable for measuring time intervals e.g. for experiments on an air track, pendulum period, period of rotation, etc. The unit consists of a photocell which is illuminated via a one millimetre aperture by light from a light emitting diode. Two LED indicators are provided. Red: The unit is powered. Green: Light reaches the receiver. The photocell unit is provided with two 6 pole DIN connectors for connection to the electronic counter no or and for daisy chain connection to additional photocell units, when signals are to be sent to the same input connection on the counter. Connector cable is provided. The unit is in rugged plastic housing with threads for horizontal or vertical mounting using the 10 mm mounting rod provided. Gap width: 90 mm. Dimensions: 160 x 120 x 28 mm Photocell unit including cable and mounting rod

measurements 9 Free fall apparatus This apparatus is designed to be used with an electronic counter to determine the fall time for a

The apparatus consists of a release mechanism which also acts as the start switch, a landing pad which acts as the stop switch and

The release mechanism is provided with two connectors for 4 mm safety banana plugs for connection to the counter start input.

The landing pad is also provided with two safety connectors for connection to the counter stop input. 1980.

10 Microphone The microphone is intended for the measurement of sound frequencies, the speed of sound and the recording of sound for

It is supplied with a one meter cable with a 6 pole DIN plug and connects directly to the electronic counter type 2002.

9 measurements 9 Free fall apparatus This apparatus is designed to be used with an electronic counter to determine the fall time for a freely falling steel ball. The apparatus consists of a release mechanism which also acts as the start switch, a landing pad which acts as the stop switch and various gold plated steel balls. The release mechanism is provided with two connectors for 4 mm safety banana plugs for connection to the counter start input. A 10 mm mounting rod for mounting the mechanism on a lab stand is supplied. The landing pad is also provided with two safety connectors for connection to the counter stop input Free fall apparatus Microphone The microphone is intended for the measurement of sound frequencies, the speed of sound and the recording of sound for Fourier transformation. The microphone itself is very small and is therefore very suitable for measurements of sound interference. It is supplied with a one meter cable with a 6 pole DIN plug and connects directly to the electronic counter type or student timer type The microphone can also be connected to an oscilloscope or other measuring instruments via a type power supply. The frequency range is Hz. Supplied with a 10 mm support rod. (Stand base not included.) Dimensions: Length 105 mm, greatest diameter 24 mm Microphone Clapper board This clapper board is ideal for producing the sharp sound pulse required for measuring the speed of sound. Consists of two hinged hardwood blocks. Dimensions: 27 x 50 x 300 mm Clapper board

10 measurements Force Dynamometers The Frederiksen dynamometers are available in 9 different models covering the range from 0.1 to 100 Newton.

Range Resolution Colour Code Dimension in mm 1038.00 0-0.1N 0.002N Silver Ø16 x 265 mm 1038.10 0-0.2N 0.004N Beige Ø16 x 265 mm 1038.20 0-1N 0.02N Yellow Ø16 x 265 mm 1038.30 0-2N 0.

0N Gold Ø20 x 310 mm Features Accuracy: The Dynamometers provide superb linearity and the 100 mm long scales are sharp and clear for excellent resolution.

10 10 measurements Force Dynamometers The Frederiksen dynamometers are available in 9 different models covering the range from 0.1 to 100 Newton. These high quality metric dynamometers are precise, durable, and calibrated in Newton. The graduations are easy to read and the resolution is 2% of full scale. No. Range Resolution Colour Code Dimension in mm N 0.002N Silver Ø16 x 265 mm N 0.004N Beige Ø16 x 265 mm N 0.02N Yellow Ø16 x 265 mm N 0.4N Red Ø16 x 265 mm N 0.1N Blue Ø16 x 265 mm N 0.2N Green Ø16 x 265 mm N 0.4N Violet Ø16 x 265 mm N 1.0N Orange Ø20 x 310 mm N 2.0N Gold Ø20 x 310 mm Features Accuracy: The Dynamometers provide superb linearity and the 100 mm long scales are sharp and clear for excellent resolution. Durability: The spring is sealed in the acrylic tube - it doesn t get tangled or over stretched. Zero-adjust: Easy and accurate zero-adjust by means of the knurled nut uppermost on the dynamometer. Sealed scales: The scales are inside the acrylic housing so that they won t wear off. Colour coded: Each dynamometer has its own colour code and the max. range printed on the scale Boxed set of dynamometers Keeps the right dynamometer for the right purpose at hand anytime! Handy foam-lined box with partitions holds the entire range of dynamometers Newton. The box is also excellent for safe and easy storage. Box with carrying handle, dimensions: 33 x 27 x 5.5 cm Boxed set of Dynamometers Foam-lined box only

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