98201 High Precision Charging Scale packaged in a cardboard box MASTERCOOL USA 

Mastercool’s high precision charging scale accurately measures small cans of refrigerant for charging systems that need a precise charge.

• Hex cylinder adapter included for easy attachment of refrigerant cylinder to scale
• Specially designed for R600a and R290
• Built in check valve will hold any remaining refrigerant within the 36” nylon tube
• Slim design for easy storage
• Two button keypad for easy operation
• Unit change (grams & ounces)
• One touch tare weighing function
• Auto zero
• Auto off automatically turns off its power if the scale is not used within 3 hours

SPECIFICATIONS:

• Capacity: 176 ounces (5000 grams)
• Sensitivity: 0.035 ounces (1 grams)
• Charging Capability: up to 1 gram accuracy
• Dimensions: 5.5 (w) x 7.3 (l) x 1.6 (h) in. (140 (w) x 185 (l) x 40 (h) mm)
• Power Source: 3 x AAA 1.5v battery
• Fitting: 1/4” SAE M flare fitting with check valve

Instructions here

Tech manual