For cutting the perineal skin and tissue to facilitate the passage of the foetal head.
Material: Martensitic steel (quenched, magnetic steel).
Instrument that cuts by shearing: surgical scissors.
Curved, with blunt end blades.
Martensitic steel composition: 0.40 % carbon; 14 % chromium.
Reusable.
Length: 20 cm.
Surgical dissecting scissors used for cutting tissue, threads and dressings.
Instrument that cuts by shearing: operating, dissecting scissors.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.15-0.40 % carbon; 13-14 % chromium.
Reusable.
Curved, with blunt end blades.
Length: 14 cm.
Surgical dissecting scissors used for cutting tissue, threads and dressings.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.15-0.40 % carbon; 13-14 % chromium.
Instrument that cuts by shearing: operating, dissecting scissors.
Curved, with blunt end blades.
Length: 17 cm.
Reusable.
Surgical dissecting scissors used for cutting tissue, threads and dressings.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.15-0.40 % carbon; 13-14 % chromium.
Instrument that cuts by shearing: operating, dissecting scissors.
Curved, with blunt end blades.
Length: 23 cm.
Reusable.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.15-0.40 % carbon, 13-14 % chromium.
Surgical scissors used for cutting or dissecting delicate tissue.
Instrument that cuts by shearing: surgical scissors Metzenbaum/Nelson.
Length: 18 cm.
Thin, curved, with blunt end blades.
Reusable.
Surgical scissors used for cutting or dissecting delicate tissue.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.16-0.40 % carbon, 14 % chromium.
Thin, curved, with blunt end blades.
Length: 23 cm.
Reusable.
Instrument that cuts by shearing: surgical scissors Metzenbaum/Nelson.
Material: Martensitic steel (quenched, magnetic steel).
Surgical scissors used for cutting or dissecting delicate tissue.
Instrument that cuts by shearing: surgical scissors.
Martensitic steel composition: 0.15-0.40 % carbon; 13-14 % chromium.
Reusable.
Thin, curved, with blunt end blades.
Length: 14 cm.
For removal of retained products of conception from inside the uterus during gynaecological procedures.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.16-0.40 % carbon; 14 % chromium.
Shank type: Rigid.
Blade shape: Oval form of a spoon.
Handle: Austenitic steel
Blade edge type: Sharp
Length: Shaft 25 cm.
Width: Spoon 12 mm.
Reusable.
It is used for pupils to learn concept of fraction in maths, consists of plastic printed in 1-12 equal division.
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The main metallic elements are made of anodized aluminum.
The unit is a bench top-unit with an anodized aluminum profile structure, and painted steel panel.
his unit is composed of:
A piston with a millimeter scale to measure the linear motion.
A vertical pivot links the rotary element (crank) and the piston.
A rotary element (crank) with a graduated disc to read the angle.
The SCR Speed Control Learning System features heavy-duty components like an SCR speed control unit, DC shunt wound motor, and fuse block to give learners real-world practice on SCR speed control skills such as connecting and operating a motor with SCR half-wave speed control, measuring the performance of SCR half-wave speed control, and troubleshooting an SCR speed control circuit. SCR Speed Control Learning System adds to the Electronic Motor Control Learning System to teach variable speed motor control of DC electric motors using Silicon Controlled Rectifier (SCR)-based circuits. These hands-on skills are carefully interwoven with world-class SCR speed control curriculum so that learners understand both the theoretical and practical knowledge that they'll need to be successful. SCRs convert AC voltage into a DC voltage in order to provide efficient variable speed control of DC motors and are widely used within industrial applications such as cranes and machine tool spindles.
Features:
Features heavy-duty components like an SCR speed control unit, DC shunt wound motor, and fuse block
Teaches variable speed motor control of DC electric motors using Silicon Controlled Rectifier (SCR)-based circuits
Skills include connecting and operating a DC shunt wound motor with both SCR half-wave and full-wave speed control and measure their performances.
The power circuit is protected by a thermal magnetic breaker and the control circuit is protected by diodes. Connections can be made between the three-phase power supply and other components in the circuit through 4mm standard color-coded safety sockets using banana plug jumper leads. The SCR Direct Current Motor Speed Controller allows students to study the operation of a silicon-controlled rectifier used in motor speed control experiments. Specifications and/or diagrams are silk-screened on the back of a clear-plastic front panel for ease of identification. Included in the Rotating Machines Trainer (50016) for 1/3 hp - 250 W. Requires a 120V 60Hz circuit. The trainer is protected by a either a diode or thermal-magnetic circuit breaker.
Educational Advantages:
Switch and start indicator light
Current limit adjustment for torque control at full load
Bridge assembly with built-in freewheeling diode
Speed control adjustment
Plug-in horsepower resistor
Design with superior line and load voltage regulation
Minimum/maximum speed adjustment
Transient voltage protection and AC fuse protection
Acceleration trim pot adjustment
Included in the basic Rotating Machines Trainer (50016) for 1/3 hp - 250 W.
Theoretical topics:
Thyristor circuit fundamentals
Thyristor component familiarization
SCR half wave rectifier
The four triggering modes
Half wave and full Âwave phase control
SCR control of a half wave rectifier
Test a Silicon Controlled Rectifier
SCR control of a full wave rectifier
UJT characteristics
UJT half wave and full wave phase control
Bidirectional conduction
SCR DC operation
Gate trigger voltage and holding current.
The Scraped Surface Heat Exchanger Series utilises the monocoque stainless steel cabinet with membrane technology control panel. The working platform can accommodate one, or two barrels (B) or a variable speed pinworker (P) alongside a product reservoir and progressive cavity feed pump.
An air incorporation system can also be added if required.
Small batch sizes enable rapid product testing and a Clean-In-Place (CIP) facility speeds turnround for increased productivity. All services required are housed inside the wash-down cabinet, which also contains a drawer mounted with the electrical chassis.
Maintenance an cooling access maintenance and cooling accessenlarge
The unit uses a refrigeration system supplied within the cabinet and utilises a chilled, recirculating brine system, which is pumped through the barrel jackets.
Features:
Integral membrane control panel enabling simple control and monitoring of all major variables
Enclosed self-contained, mobile, stainless steel service cabinet for easy cleaning and wash down
Full control of barrel speeds up to 1000rpm
Temperature control system incorporated
Hygienic design
Made from stainless steel
Hard chromed barrels
In cabinet refrigeration.
Four kinds of punches as one set, which consists of perforated pipe, a poke and so on. The outside diameter of punch is φ6mm?φ8mm?φ10mm respectively and the aperture is φ4mm?φ6mm?φ8mm respectively.
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The instrument shelter cover is horizontal two wood inlaid together, above the front behind the 10mm, in order to protect the equipment from damage.
The size of the instrument shelter is about 460mm * 290mm * 537mm (height, width and depth).
The height of the frame is 1500mm, the width of the material is 35mm, the thickness of 3mm is high quality carbon structural steel, and the surface is rustproof.
MG Screw compressor with charge-air cooling
Easily visible:
Two screw spindles, driven via a magnetic clutch and gear wheels.
At the bottom of the charger, is the cutaway charge-aircooler with water channels.
The charger runs at 12,000 RPM.
The main element of the unit is a slotted, elastically deformable steel block. The resulting deformation is recorded by a mechanical dial gauge, and is directly related to the bolt tension force generated. By tightening the bolt joint, the slotted area is deformed, thereby generating an axial tension force in the bolt.
Features:
Breakaway torque of a bolt joint
Correlation between tightening torque and tension force on standardised bolts.
Learning Objectives And Experiments:
Measurement Of The Breakaway Torque, Including For Different Fitting Situations Of The Bolt Joint
Axial tension force in a bolt joint dependent on the tightening torque or the elastic deformation of a slotted block
Measurement of thread friction and overall friction.
Range: M5-M20 M16-M42
Point Angle: 5 -30 deg. 5 -30 deg.
Power: 220V 180W 220V 250W
Motor: 4800rpm 4800rpm
Grinding wheel: CBN(HSS)orSD
Dimension: 36x27x30.5cm 40x30x31cm
Weight: 16kg 27kg
The resulting deformation is recorded by a mechanical dial gauge, and is directly related to the bolt tension force generated. The bolt joint is tightened and slackened using a special torque wrench, which can be set sensitively with the aid of a threaded spindle. The main element of the unit is a slotted, elastically deformable steel block. By tightening the bolt joint, the slotted area is deformed, thereby generating an axial tension force in the bolt. By using an axial bearing, the head friction of the bolt can be largely excluded, so that only the friction of the threaded joint is measured.
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