Question 1

How do u test 110 volts

Accepted Answer

The first thing you should do is find or look up the owners manual on the internet.  It will tell you how to use the tester.  Where the tester lead cables are inserted.  Where to turn the dial to do the specific test.  You will find that the leads are inserted in the bottom right and left corners of the tester.  The dial is turned so that it points to ACV and 250 to test for 120 volts.  Leads are inserted into the outlet and the tester should display 120-125 volts approximately or the midway point on the display.  I would find the manual first, read and understand it prior to using it.  Electricty is dangerious.

Question 2

Could I use the standard leads from another meter on this unit⁷

Accepted Answer

If you don't have a direct fit, it should be possible to splice into the plugs that come with this unit. Seems to me that the leads for the analog meters are alike, but I don't know about digital meters.

Good luck.

Question 3

What gauge are the wires?

Accepted Answer

Here is all the info I can find on it....

Product Overview
This multifunctional analog multimeter was designed for the homeowner, hobbyist or professional needing to make electrical and electronic equipment measurements. Capable of measuring 6 functions on 14 ranges on it's easy-to-read color-coded analog display you will find yourself reaching for this handy unit almost every time. Unit tests AC and DC voltage of 10-50-250 and 500 Volts, DC current 250 mA, up to 50 kelvin of resistance, 20 to +56 dB decibels on AC voltage ranges and common household batteries from 1.5 V to 9 V.
15 position rotary dial
Zero ohms adjustment dial
Spare 250 mA fuse included
Specifications
Brand Name: Gardner Bender
Product Type: Multimeter
Automatic Ranging: No
Batteries Included: Yes
Battery Size: AA
Brand Name: Gardner Bender
Color: BLACK
Packaging Type: Carded
Width: 4.7 in.
Click here to see the Safety Data Sheets for this product.

Question 4

The instructions mention a "mirrored scale plate" on the face of the tester for lining up the needle.  I don't see it. Any clues?

Accepted Answer

I have the GM-312. It does not have the mirrored scale  plate.

ASIN	B00291X79O
Best Sellers Rank	#57,794 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #73 in Multi Testers
Brand	Gardner Bender
Brand Name	Gardner Bender
Color	Black
Customer Reviews	4.4 out of 5 stars 938 Reviews
Global Trade Identification Number	00032076072995
Included Components	Meter, Test Leads, Operating Manual
Item Dimensions	1.25 x 2.75 x 4.25 inches
Item Weight	4.96 ounces
Item dimensions L x W x H	1.25 x 2.75 x 4.25 inches
Lower Temperature Rating	18 °C
Manufacturer	Gardner Bender
Measurement Type	Multimeter
Model	GMT-318
Number of Items	1
Part Number	GMT-318
Power Source	Battery Powered
Specification Met	Agency Approved
Style	6 Function / 14 Range
Style Name	6 Function / 14 Range
UPC	032076072995
Unit Count	1 Count
Warranty Description	1 year limited warranty

GMT-318 Analog Multimeter, 6 Function, 14 Range, AC / DC Volt, 500V

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