Sherline Hydraulic Tongue Weight Scale (5781) DISPLAYS Both 0-5000LB / 0-2250KG.

Manufacturer ‏ : ‎ Sherline. About the Trailer Tongue Weight Scale. on the gauge. No delicate electronics, no batteries, and only one moving part. Displays both 0-5000 [LB.]. and 0-2250[KG.]. The scale is machined from solid billet steel and aluminum.

eBay