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THERMOSTATS 
A thermostat will not heat the water. A thermo- 
stat is an electrically controlled automatic switch 
that will turn the aquarium heater on or off at 
whatever temperature it is set for, thus maintain- 
ing a constant water temperature. 
All thermostats are fully guaranteed by the manu- 
facturer for one year. 
No. 1. RENOYLENE THERMOSTAT— 
DISCONTINUED 
No. 2 SIMPLEX THERMOSTAT—Built-in radio in- 
terference eliminator. Will accommodate several 
heaters up to combined wattage of 300 watts. 
‘4% foot cord with 3 way connection for pilot 
light and additional heaters; inside adjustment, 
aluminum clip holder. 8 inch tube. each $4.00 
(Pilot light, if desired, 35c extra) 
No. 2A. “SHORT” SIMPLEX THERMOSTAT — 
same as No. 2 with 6 in. Tube. $3.30 
No. 3. DUPLEX THERMOSTAT—Designed for 
safety. Two separate thermostat units so arranged 
that either unit will shut off heaters. One unit is 
set for 75° F, if it fails to turn off heaters the 
other unit will shut off at 80° Fr. (Both units are 
adjustable.) Built in radio condenser to eliminate 
static, 3 way plug, 4¥2 foot lead cord, will accom- 
modate combined heaters up to 300 watts. 8 inch 
tube. each $6.25 
(Pilot light, if desired, 35c extra) 
No. 4. OUTSIDE ADJUSTMENT THERMOSTAT— 
Knob on top permits easy outside adjustment. 
Will accommodate several heaters up to 500 watts. 
Built in static eliminator, 3 way plug, 4% foot 
lead cord, aluminum clip holder. 8 inch tube. 
each $5.65 
(Pilot light, if desired, 35c extra) 
WIL-NES OUTSIDE ADJUSTMENT HEATER 
AND THERMOSTAT COMBINATION 
This two-tube unit com- 
bines heating efficiency 
with smart good looks for 
your aquarium. Control 
knob, pilot light, hanger 
fastner and tubes are all 
built into an attractive iv- 
ory colored bakalite case. 
Metal thumb screw fastens 
heater securely to outside 
of aquarium. This entirely 
new heater is built to give 
years of service, fully guar- 
anteed by the manufactur- 
er. All parts are easily and 
inexpensively replacable. 
Low priced—dependable— 
a precision instrument in 
a handsome package. 
8" Tube 25-50-75-100 watts—all sizes $5.75 
10’. Tube 25-50-75-100 watts—all sizes $6.00 
a ne en ——————————e_ee SSS 
ALL THERMOSTATS AND HEATERS ARE FULLY GUARANTEED 
No. 5. PILOT LIGHT—Bulb and plug in socket to 
plug in thermostat connection. When heater is on 
the light is on, goes off when thermostat shuts off 
heater; makes thermostat adjustment simple, an 
indicator to show when heater is on. each 35c 
No. 6. PILOT LIGHT—Long lasting neon-activated 
light. Complete unit only 1% inches. Plugs into 
thermostat connection. ~ each 35¢ 
No. 7. PYREX TUBES—To replace broken ther- 
mostat or heater tubes. These tubes come in 6, 
8 and 10 inch lengths to fit most heaters and 
thermostats. 
5¥''x6" (For 2 tube Thermostatic Heater) 20c 
ie eee 20ers xo" 25cm x10 ose: 1x12) S0c 
SUPREME OUTSIDE ADJUSTMENT 
HEATER AND THERMOSTAT 
COMBINATION 
The finest of combination heater and thermostat 
single tube units. Everything in one tube—-Sensi- 
tive and dependable thermostat with outside ad- 
justing knob for ease and simplicity—built in 
pilot light, radio and TV static eliminator con- 
denser—and heavy duty heat- 
ing element. All parts and 
workmanship on this combina- 
tion, outside adjusting heater 
and thermostat are fully guar- 
anteed for one year. 
40 Watt 8 inch tube $5.60 
75 Watt 8 inch tube 5.60 
75 Watt 10 inch tube 5.75 
100 Watt 10 inch tube 5.75 
100 Watt 12 inch tube 5.95 
150 Watt 12 inch tube 5.95 
No. 8 HEATER SEALING COMPOUND—1 oz. can 
to seal at least two heaters. Easy to use and any 
that is left may be kept indefinitely for future use. 
15c per can 
CALSTAT CALIBRATED THERMOSTAT 
Outside, calibrated adjust- 
ment, plus built in thermo- 
meter. Two precision in- 
struments for the price of 
one. Pyrex glass tube, no 
radio interference, 2 year 
guarantee, complete with 
stainless steel hanger. 
*“Range—70-90 F. 
*Capacity—S00 watts 
*Guarantee—2 years 
*No radio interference 
*Pyrex glass tube 
Price Only $5.50 
NEW PENCIL TYPE HEATERS 
By their design these Pencil Type 
Heaters provide faster and more 
uniform heating. Completely sub- 
mersible — blends unobtrusively 
with the plants in your aquarium. 
25 Watt 8 inch $2.65 
90 Watt 10 inch 2.65 
75 Watt 10 inch 2.65 
100 Watt 12 inch 2.85 
125 Watt 16 inch 2.85 
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