Electronic Associate

Electronic Associates

Electronic Associates was located at 4616 Yonge Street in Willowdale, Ontario in 1955. The company began operations in 1946. They offered a wide variety of instruments “for radioactivity detecting and measuring". In 1955, they offered a complete line of radioactive measuring equipment.

The Weekender Model EA-65 was available in 1955. It was a counter for the hobbyist. It used one flashlight battery The unit has an internal GM tube. It measures 7” x 1-3/4” x 3-3/4” and weighs 1-3/4 lbs. The unit sold for $69.

Electronic Associates Weekender Model EA-65 1955

The Weekender’s Rate Meter Model EA-70 sold for $180 in 1955. It was a lightweight unit similar to the EA-100. It adds earphones and a meter. It uses 3 flashlight batteries and has a range of 500 to 5,000 cpm.

Electronic Associates Weekender Model EA-70 1955

The Model EA-70S was a Weekender’s Scint-based on the Model EA-70. It had an external sodium iodide crystal in a probe. It sold for $235 in 1955.

Electronic Associates Model EA-70S 1955

The Model EA-100 was initially offered in 1948. In 1955, the Propector’s Choice was often referred to as a “workhorse”. It had a larger GM tube. It was 3” x 6-1/4” x 8-1/4” and weighs 5.5 lbs. It sold for $140.

Electronic Associates Model EA-100 1948

Electronic Associates Model EA-100 1955

The Geologist Model EA-110 is a pocket sized instrument for prospecting. It has two GM tubes and comes in a shatterproof plastic case. It measures 4-1/4” x 9” x 1-1/2” and weighs 2 lbs. It sold for $125 in 1955.

Electronic Associates Geologist Model EA-110 1955

Electronic Associates Model EA-110 1950's

The Model EA-135 P beta-gamma probe monitor was offered in 1955 for geologists and engineers. It sold for $280. It has a locking slide for beta measurements. It has ranges of 500, 1000, 5000 and 50,000 cpm.

Electornic Associates Model EA-135 P 1955

The Model EA-135 is a portable GM counter for accurate grip surveys. It has four ranges of 1000, 5000, 10,000 and 50,000 cpm. It has a 3” square faced meter and three internal GM tubes. The unit measures 4.5” x 8.5” x 10” and weighs 9-3/4 lbs. It sold for $295.

Electornic Associates Model EA-135 1955

The Model EA-135S is a gamma scintillation counter which sold for $595 in 1955. It has four ranges of 5000, 10,000, 50,000 and 100,000 cpm. The probe is 3” diameter x 8.5” long and contains a sodium iodide crystal. The unit is 4.5” x 8.5” x 8.5” and weighs 10.75 lbs.

Electronic Associates Model EA-135S 1955

The Model EA-135 PS was designed for labs and special applications in 1955. This unit is the same as the EA-135 P but has a plug for adding different probes. It has four ranges of 500, 1000, 5000, and 50,000 cpm. The Model EA-135 “Special” sold for $244.The side window beta gamma probe was $51, the end window beta gamma was $77.50, and the alpha scintillation probe was $169.

Electornic Associates Model EA-135 PS 1955

The Vein Spotter Model EA-115 was offered in 1955 for $280. It was a completely new concept being designed for underground use. It has two ranges of 2000 and 20,000 cpm. It has a 3” meter and was moisture proof.

Electronic Associates Vein Spotter Model EA-115 1955

The Model EA-136S is an ultra sensitive scint counter offered for $1050 in 1955. It was designed as an all-in-one unit for ultimate sensitivity. It has ranges of 5000 and 250,000 cpm. It weighs 19 lbs.

Electronic Associates Model EA-136S 1955

The Model EA-191 Drill-Hole Counter was offered in 1955 for $533. It was designed for logging drill holes, lake bottoms, and cliff sides. It can operate with up to 1000’ cable. It has three ranges of 200, 2000 and 20,000 cpm. The probe is shock proof and water-proof.