New consulting relationship with GreenTecAuto begins
What actually goes wrong with the batteries????
A look at todays Hybrid and EV battery packs
Battery packs exposed
Keeping Warm In New England
Plugging into the SUN
Making a small solar concentrator
Building MIMA and the plug in adapters
Converting a telephone truck to electric
DIY dual pulse Capacitor Discharge Spotwelder
Chevy Bolt EV joins the family
Getting in shape while making electricity
Retirement
Replacing gasoline with solar electric lawn equipment
What is Genesis One?
How to stop the aging process DIY
MIMA Install Day 2005 a Big Success!
Building a hybrid car grid charger
Tapping into the Wind
Expanding MIMA with the Distribution board ( users projects )

Better Specific gravity instrument

Better Specific gravity instrument
HydroVolt Specific Gravity meter

Finally got the HydroVolt temperature compensated Specific gravity meter.
The design is elegant in its simplicity.
The black bulb is squeezed, the acid is slowly drawn into the unit to completely fill the chamber. The temperature wheel and the SG wheel rotate based on the SG of the acid, and the temperature of the acid.
The SG pointer then points at the corrected value of SG.
The photo shows the device reading my acid reference solution which has a SG of 1.265.The temperature was ~ 40 F, yet the instrument gives the correct SG
Nice instrument
Hydrovolt