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2 GETTING STARTED
2.1 FITTING BATTERIES
The Elcometer 121/2 Universal P.I.G. uses dry cell batteries only.
To fit or replace the battery: Use a coin to loosen and open the slotted screw beside the eye-piece. Remove
battery and replace with new battery 1.5 V (leakproof), positive end first. Reclose in reverse order.
Note:
Remove the batteries from the instrument if it is to remain unused for a long period of time. This will
prevent damage to the instrument in the event of malfunction of the batteries.
Batteries must be disposed of carefully to avoid environmental contamination. Please consult your local
Environmental Authority for information on disposal in your region.
Do not dispose of any batteries in fire.
2.2 REPLACING THE BULB
Screw objective lens into the instrument until the bulb is easily accessible. Loosen bulb holder slightly with
small hexagonal wrench and screw out the bulb. Screw in the spare bulb (1.2 V, 0.22 A) and re-secure the
bulb holder.
Check Light Spot: To do this, place the PIG in measuring position over a textured object (for example, a
newspaper) and switch the light on. The light spot, with its maximum brightness, must lie below the centre
of the objective lens. If not, loosen the bulb holder with the hexagonal wrench and move it until the light spot
is correctly placed. Then secure the holder.