MF133 is a basic personal multimeter for home or office uses. This is also the most common multimeter for students and it often comes as a part of educational science kits related to electricity. 
Size(HxWxD):100mmx64mmx33mm
Weight:95g 

Desktop voltmeter is used to show the voltage between two points in your electric circuit. It has 3 binding posts. Connect the black binding post to the negative side of circuit and connect one of the red binding posts to the positive part of your circuit. Each of the red binding posts are for a different voltage range. One is for 0 to 15 volts and the other is for 0 to 3 Volts.
All three binding posts are marked with embossed letters.
Box Dimensions are: 10 x 9 x 6 cm

Ammeter or Amp meter or Ampere meter is used to show the electric current in an electric circuit. This is a dual scale desktop ammeter for the range of 0 to 3 Amperes or 0 to 0.6 Amperes.
This ammeter has one black binding post for the negative side of the circuit and two red binding posts for the positive side (One for each range). All three binding posts are marked by raised letters.
Box dimensions are 10 x 9 x 6 cm.

Analog multimeter for general electrical use.

• 16 Position rotary function and range selector.
• Measures AC/DC Voltage, DC Current and resistance
• Fuse & Diode protection.
• Integrated test leads.
• Meets UL 1244 & IEC-1010-1.
• Includes rugged holster and full instructions.

Use it as voltmeter, ohmmeter or ameter.

AMM360 is a desktop analog multitester for measuring DC Volt, AC Volt, DC Current and Resistance. AMM360 can be used as a very sensitive galvanometer and can show as low as 0.01 DC voltage. AMM360 can also be used to test transistors and diodes.

Use it as voltmeter, ohmmeter or ameter.