Model POD 20 Resistance range  100 ohm to 20 kohm el. angle 320° mech. angle 320°  Linearity +/- 0.5 % Rotational life 100'000 Cycles           Model POD 1810 - 10 Turns - shaft stainless steel Resistance range  100 ohm to 20 kohm Shaft stainless steel mech. angle 3600°  Linearity +/- 0.25 % Rotational life 1'000'000 shaft revolutions            Model POD 1850 - 10 turns - shaft brass nickel plated Resistance range  100 ohm to 20 kohm Shaft brass nickel plated mech. angle 3600°  Linearity +/- 0.25 % Rotational life 1'000'000 shaft revolutions           Model POD 1820 - 20 turns - shaft brass nickel plated Resistance range 1kohm to 10 kohm el. angle 7200° mech. angle 7200° Linearity +/- 0.25 % Rotational life 500'000 shaft revolutions