Buying guides.
Straight answers on what to buy and why. For the theory behind the instruments, see the technical library on cieinstruments.in.

Buying guide · 6 min read
How to choose an insulation tester
Test voltage, resistance range, analog or digital, hand-driven or motorised: a plain guide to picking the right insulation tester for motors, cables and switchgear.
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Buying guide · 6 min read
How to choose a multimeter: a buyer's guide
True RMS, CAT rating, counts, auto-ranging and bench versus handheld. What actually matters when you buy a digital multimeter in India.

Buying guide · 5 min read
Clamp meter buying guide: AC, DC and True RMS explained
How to choose a clamp meter: AC only versus AC/DC, True RMS, jaw size, current range and the extras that are worth paying for.

Buying guide · 6 min read
Soldering station buying guide: wattage, temperature control and tips
Choosing between a soldering iron and a soldering station, how much wattage you need, and why lead-free and ESD-safe matter.

Buying guide · 5 min read
Bench power supply buying guide: voltage, current, linear or SMPS
How to choose a regulated DC power supply: how much voltage and current you need, linear versus SMPS, and when to pick programmable.

Buying guide · 5 min read
Oscilloscope buying guide: bandwidth, channels and analog versus digital
The five-times rule for bandwidth, how many channels you need, and when an analog scope still makes sense.

Workshop setup · 6 min read
Build a PCB repair bench: the instruments you actually need
A practical list for setting up an electronics repair bench: multimeter, soldering station, hot air, power supply, scope and lighting.

Workshop setup · 5 min read
The electrician's test instrument kit: what to carry and why
A starter and upgrade list of test instruments for maintenance electricians: multimeter, clamp meter, insulation tester, earth tester and phase sequence indicator.

Comparison · 4 min read
Analog or digital? Choosing the right style of test instrument
When a hand-driven analog insulation tester is the better buy, and when digital wins. A straight comparison for field and lab use.

Business buying · 3 min read
Buying test instruments for your business: GST invoice and input credit
Why a proper GST tax invoice matters when your company buys test and measurement instruments, and what to give the seller.