How do you read this thing? There is no arrow or other marking that acts as a guide.

There are two disks that rotate independently. I believe one is for automatic temperature compensation & the other is the specific gravity. When you take a specific gravity measurement, it will be obvious. Suck in enough battery "water" to cover the discs. It really is a brilliantly designed hydrometer, so much better than the glass tube & float type where you have to calculate the SG based on the temperature compensation read on the thermometer.

You squeeze the electrolyte back into the cell after testing right? And do you have to rinse it out before taking the next reading?

Yes, replace the electrolyte. Once out and you move to the next cell squeeze the bulb and suck in the new electrolyte three times to mix out any remaining electrolyte.

Unitec 74274 Battery Hydrometer Hydro Volts

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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NZ$242

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Charge your confidence with precision testing!

ROTATE WITH EASE - 360° rotatable design means no awkward positioning—test batteries from any angle.
ALL WEATHER READY - Elastic suction ball works flawlessly at all temperatures for consistent performance.
LEAK PROOF CONFIDENCE - Innovative hydrostatic barrier stops leaks and air bubbles, guaranteeing reliable results.
PRECISION AT A GLANCE - Large, easy-to-read scale ensures accurate battery acid density readings every time.
GERMAN ENGINEERING EXCELLENCE - Crafted in Germany, this precision tool delivers durability and trusted accuracy.

The Unitec 74274 Battery Hydrometer Hydro Volts is a precision German-made device designed to measure the acid density and state of charge in all lead-acid batteries. Featuring a large, easy-to-read scale, a 360° rotatable twin measuring system, and a hydrostatic barrier to prevent leakage and air bubbles, it ensures accurate and reliable battery testing in any environment.

Specifications

Asin	B007CW8Y9S
Best Sellers Rank	#354,591 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #136 in Lab Hydrometers
Brand	Unitec
Customer Reviews	4.5 4.5 out of 5 stars (212) 4.5 out of 5 stars
Date First Available	July 3, 2013
Item Model Number	74274
Item Weight	4.1 ounces
Manufacturer	Unitec
Manufacturer Part Number	74274
Product Dimensions	1.57 x 4.13 x 7.09 inches

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NZ$242

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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