7003-230 STRATTON BROS. No. 10 machinist's level. Type 1 of Stratton Bros. signature brass-bound rosewood level with no sideviews or adjustment on the level vial and marked with just the original 1870 patent.? This is the 6-1/2" version, which didn't have a plumb vial.? The brass is very tarnished but could be polished if you desire; looks like someone already did a little polishing. Also, the bubble is too large, indicating a hairline crack and loss of fluid. Good 80-150 (CAL330)